Auxiliary Verb List with Examples, Exercises & PDF

Teaching auxiliary verbs in context

A reference chart gives learners a starting point. The sections below show how to practise these forms in questions, negatives and connected sentences.

Teachers do not need a longer reference sheet. They need a better teaching order.

Organize the list by function, then use learners' responses to choose a teaching priority. A missing auxiliary, a misplaced auxiliary and a wrong main-verb form need different explanations.

Recognition in a written exercise does not show how a learner uses the same form in conversation. Follow a controlled question with a short speaking exchange and compare the two responses before deciding what to revisit.

The sections below explain the patterns and give additional classroom practice ideas. Choose a task that matches the form your class needs, rather than assigning every auxiliary in one session.

1. Primary Auxiliaries Be, Do, Have

If you teach only one part of the auxiliary verb list thoroughly, teach this one. Be, do, and have run a huge part of English grammar. They build tenses, questions, negatives, short answers, and emphasis. They also cause confusion because all three can work as auxiliaries and, in other sentences, as main verbs.

Ask learners to identify the verb's job in the sentence before choosing its question or negative form.

Where students go wrong

Compare these:

• Auxiliary be: The students are using the platform.
• Main verb be: The students are tired.
• Auxiliary have: The class has completed the first grammar topic.
• Main verb have: The class has a new teacher.
• Auxiliary do: Did you assign the listening exercise?
• Main verb do: They do their homework after dinner.

The classic errors show up fast:

• Missing do-support: He not understand instead of He doesn't understand.
• Double marking: Did you assigned...?
• Mixing have forms: I don't have finished instead of I haven't finished.
• Avoiding emphasis: students understand do in questions, but not in She does want to improve her score.

How to teach them without mixing everything together

Don't start by saying, "These are helping verbs and sometimes main verbs too." That's true, but it's too much at once.

Start with one job per verb.

Teach be for continuous forms first. Then teach do for present and past questions and negatives. Then teach have for perfect forms. Only after that should you compare their auxiliary and lexical uses side by side.

Practical rule: Separate function before comparison. Students usually handle the contrast better once each pattern already feels familiar.

Mark the auxiliary and main verb differently: circle the auxiliary and underline the main verb, or combine these markings with two colours.

• He doesn't understand.
• They have completed the task.
• We are revising auxiliaries.

That small visual distinction reduces a lot of avoidable confusion.

Activities that stick

Sentence transformation still works, provided it isn't the only thing you do. Give a plain statement and make students produce three versions:

• affirmative
• negative
• question

Example: She understands the rule. → She doesn't understand the rule. → Does she understand the rule?

Then add one more: → She does understand the rule.

That final emphatic form is useful because it pushes students to see do as more than a question marker.

A stronger classroom sequence looks like this:

• Board drill: Students convert ten short present simple statements into negatives.
• Pair speaking: One student says a statement, the partner turns it into a question.
• Error hunt: Give learners a short paragraph with missing or incorrect auxiliaries.
• Platform follow-up: Assign focused drills on one auxiliary pattern at a time, not all three together.

What doesn't work well is teaching all the forms in one giant chart and hoping exposure will sort it out. It rarely does.

2. Modal Auxiliaries Can, Could, May, Might, Must, Should and More

Modals are where students stop sounding mechanical and start sounding human. With modals, they can express ability, permission, advice, possibility, deduction, and obligation. Without them, communication stays flat.

The problem is that many auxiliary verb list pages dump modals into one long sequence and move on. That creates recognition, not control.

Group modals by function, not alphabet

Teach them in useful families:

• Ability: can, could, be able to
• Permission: can, may
• Advice: should, ought to
• Possibility: may, might, could
• Obligation: must, have to
• Prediction or willingness: will, would

That structure helps students compare meaning. It also prevents one of the most common classroom outcomes, where learners know the list of modals but can't explain why You must leave now sounds different from You should leave now.

Use short, direct examples:

• After this lesson, you can identify the main auxiliaries.
• Students must practice regularly.
• It might rain later.
• You should try the writing task again.

The form is simple. The meaning isn't.

Modals are grammatically friendly in one sense. They don't take -s in the third person and they take the base form of the verb:

• She can swim.
• He must study.
• not He cans swim or She must studies

But the social meaning can be subtle. Can I open the window? and May I open the window? both ask permission, but they don't feel equally formal. You must finish this and You have to finish this overlap, but not perfectly in every context.

Give the speaker a purpose and an audience so learners can explain their modal choice as well as its form.

Role-play works well here. Give them scenarios with relationships built in:

• student to teacher
• child to parent
• employee to manager
• friend to friend

A learner asking a friend, May I borrow your pen? isn't wrong, but the classroom can discuss why Can I borrow your pen? feels more natural there.

One overlooked teaching point

A lot of learners also need a clean explanation of the difference between primary auxiliaries and modals. The overlap confuses them because some lists treat them inconsistently. A useful teacher reference is this discussion of primary auxiliaries and modal distinctions. It highlights exactly the kind of issue students ask about: why have can be a main verb in I have a car, while can doesn't behave the same way.

For practice, gap-fills still help, but only if the context is rich enough to justify one answer over another. If three modals seem possible, that isn't a bad exercise. It's a good discussion.

3. Semi-Modals and Other Modal-Meaning Expressions

These are not extra core auxiliary verbs. Cambridge distinguishes semi-modals such as used to from other verbs with modal meanings such as have to, be going to and be able to. Their meanings can overlap with core modals, but their question, negative and tense forms are not all the same. Teach the actual pattern rather than one combined rule.

Take have to. Learners think it should behave like must. But in questions and negatives, it behaves differently:

• I must leave.
• Must I leave?
• I have to leave.
• Do I have to leave?
• I don't have to leave.

That shift matters. If students don't notice it, they produce forms like Have to you go? or You don't must go.

Useful modal-like expressions to teach

In most ESL classrooms, these are the most useful first:

• Have to for obligation or necessity
• Used to for past habits or past states
• Be going to for plans and expected future events
• Be able to when can doesn't fit the tense or structure
• Need to for necessity in everyday communication

A few examples in context make the distinctions clearer:

• Teachers have to grade assignments.
• We used to struggle with homework before using a shared platform.
• I'm going to complete the reading module tonight.
• Soon, she'll be able to speak more fluently.

The mistakes worth correcting early

Students often confuse used to with the simple past. Sometimes that's harmless. Sometimes it isn't.

• I lived in Rome for a year describes a past fact.
• I used to live in Rome suggests a past state that is no longer true.

Timelines help here. Draw past and present. Show the old habit or state stretching across the past and stopping before now.

Negatives cause another problem:

• I didn't use to like tea.
• I used not to like tea.

Most teachers focus on the first form because it's more common and easier for learners to produce confidently.

Better drills for modal-like expressions

Short substitution drills are useful at the beginning, especially for have to because students need to automate do/does/did support in questions and negatives.

After that, move quickly to contrast tasks:

• Obligation contrast: must versus have to
• Past habit contrast: used to versus simple past
• Future contrast: will versus be going to
• Ability contrast: can versus be able to

A practical classroom activity is "same meaning, different form." Give a sentence, then ask learners to restate it using another modal or modal-like expression where the meaning allows.

Example: She can finish it tomorrow. → She'll be able to finish it tomorrow.

That kind of rewriting builds flexibility better than simple matching exercises.

Do not treat these frequent expressions as afterthoughts. Show which forms need do in questions and which change with be, then return to them in real classroom instructions.

4. Aspect Auxiliaries Perfect and Progressive Forms

Aspect is the point where grammar stops being a chart and starts shaping meaning. If learners do not control perfect and progressive forms, they can often make sentences, but they cannot show whether an action was in progress, already completed, or connected to the present.

The two core patterns are straightforward:

• Progressive: be + verb-ing
• Perfect: have + past participle

Teachers need to treat these as high-priority classroom targets, not as advanced extras. Students meet them constantly in instructions, stories, listening texts, and everyday conversation.

Progressive forms show duration, background, and temporary action

The progressive usually makes sense faster when students see it attached to a time reference.

• While students are practicing, the teacher is monitoring their progress.
• I was checking homework when the bell rang.
• They'll be revising before the test.

That contrast is important because learners often know the form before they know the job it does. They produce I study now when the task calls for an action in progress, or they overgeneralise and say I'm knowing the answer.

Verbs such as know, like, want, need, believe, understand and own commonly describe states and are usually not continuous in those meanings. Compare the following examples, then ask learners to explain why the simple form fits:

• I know the answer.
• I am knowing the answer.

Perfect forms need contrast and repeated decision-making

The present perfect causes problems for a specific reason. Many learners try to match it to one tense in their first language, and the match is often unreliable. Clear time markers and timeline contrasts solve more than terminology does.

• They have already finished three grammar exercises.
• They finished three grammar exercises yesterday.

The first sentence connects a past action to the present result. The second sentence places the action in a finished past time. For teachers who want a concise classroom reference, this explanation of past versus present perfect is useful when students keep mixing those two forms.

Past perfect and perfect progressive usually become manageable once those earlier contrasts are stable:

• He had never seen a gamified platform before he found one.
• We have been waiting for a tool like this for years.

Students do not usually need more rules here. They need more decisions.

Common learner errors worth prioritising

Check which of these patterns appears in your learners' work before choosing a focus:

• using simple past instead of present perfect with unfinished time
• adding progressive form to stative verbs
• dropping have in perfect forms
• confusing for and since
• avoiding perfect progressive completely because it feels too long

That last problem shows up a lot in writing. Learners understand have been studying when they read it, but they fall back to study or have studied when they write under pressure.

Practice that improves aspect choice

Aspect needs more than gap-fills. Students can complete ten mechanical items and still choose the wrong form in speech.

Better options include:

• Picture sequences for background action versus completed events
• Timeline prompts for present perfect versus simple past
• Interrupted action stories for past progressive plus simple past
• Personalised duration tasks such as How long have you been learning English?
• Error-correction races with stative verb mistakes

Try a three-column sort: finished past, present connection and action in progress. Give learners short sentences with context, then ask them to justify the category before naming the tense. Discuss sentences that fit more than one description.

Return to the selected pattern in a later task and check whether learners still need the reference. When the next focus is voice, these passive voice exercises give contextual choices and explained answers.

Connect form and meaning: establish what happened and when, compare two possible forms, then ask the learner to choose and explain.

5. Passive voice with be and get

The ordinary passive uses auxiliary be plus a past participle. The get passive is a related alternative, but get is not a fourth primary auxiliary. The passive voice often gets taught too late or too abstractly. Students memorise be + past participle and then avoid using it. That's understandable. The passive makes more sense when learners can see why a speaker chooses it.

Start with purpose, not form.

• Grammar is taught in every ESL class.
• His email got lost in the spam folder.
• Progress can be tracked on the teacher dashboard.
• The assignment has been submitted by all students.

In each case, the receiver of the action matters more than the doer.

Be passive first, get passive second

Most classes should start with be passives because they're more neutral and more common in textbooks, formal writing, and academic English:

• The essay was marked yesterday.
• The rules are explained clearly.

Then introduce get passives for everyday spoken English and situations that feel more event-like or accidental:

• My phone got damaged.
• He got promoted.
• The file got deleted.

That distinction isn't absolute, but it helps.

Classroom moves that make the passive concrete

Physically rewrite active sentences into passive ones on the board.

• The teacher assigned the homework.
• The homework was assigned by the teacher.

Show students what moved. Mark the old object and the new subject. Once they see the movement, the structure stops looking random.

Then use contexts where the agent is unknown, obvious, or unimportant:

• My bike was stolen.
• English is spoken here.
• The report was published yesterday.

Those examples make the communicative value obvious.

A useful follow-up is targeted work with passive voice exercises for ESL learners, especially after active-to-passive transformation on paper. Students usually need both.

Where learners usually slip

They often forget the auxiliary entirely: The homework assigned yesterday.

Also check who receives the action. The teacher was assigned the homework is grammatical, but it says the teacher received the assignment. It is not a meaning-preserving passive of The teacher assigned the homework; that would be The homework was assigned by the teacher.

The fix is repetition with constrained patterns first, then freer writing later.

Here is a simple progression that works well:

• Recognition: Underline passive verbs in short texts.
• Controlled transformation: Change active to passive.
• Purpose choice: Decide whether active or passive fits better.
• Freer use: Write a short report, process description, or news item.

Once learners can use the ordinary be passive, compare a get passive in a suitable spoken context. Keep its meaning and register separate from the list of primary auxiliaries.

6. Auxiliaries in Question Formation Mastering Inversion and Tags

For beginners, this is often the primary challenge. Many students can recognise an auxiliary in a sentence long before they can reliably move it in a question.

English questions usually require subject-auxiliary inversion:

• Have you tried the free trial?
• How many students can I add to my class?
• Is the task finished?

When there is no auxiliary in the statement, English often adds do:

• You offer support for B1 learners.
• Do you offer support for B1 learners?

When a question does not need do: subject and object questions

In an ordinary affirmative present-simple or past-simple question, do not add do, does or did when the question word itself is the subject. Compare these questions about the same event:

• Statement: Maya called Leo.
• Ask about the subject: Who called Leo? — Maya. Keep called; there is no separate subject after who.
• Ask about the object: Who did Maya call? — Leo. Maya remains the subject, and did takes the base form call.

This does not mean subject questions never contain auxiliaries. Keep auxiliaries required by the verb phrase: “Who is calling?” and “Who has called?” Negative questions can need do-support (“Who didn't call?”), and emphatic questions can use it too (“Who did call?”). See Cambridge's guide to WH questions for these distinctions.

Pair practice: ask about the bold words

Write one question for each sentence. Then have a partner answer without looking at the statement.

1. Nina teaches the evening class.
2. Nina teaches the evening class.
3. Omar opened the window.
4. Omar opened the window.

Why lists don't solve the inversion problem

Knowing the list is different from forming a question. Compare What do you want? with the missing-auxiliary form What you want? For a yes/no question, teach the usual interrogative Do you like football? while recognising that You like football? can be a conversational statement question.

The fix is pattern practice with immediate use.

Give learners stems and keep the variable small:

• You like pizza. → Do you like pizza?
• She is ready. → Is she ready?
• They have finished. → Have they finished?
• He can swim. → Can he swim?

Only mix auxiliary types after each one feels stable.

Tag questions need rhythm as much as grammar

Tag questions are useful because they combine meaning, polarity, and pronunciation:

• The leaderboard is motivating, isn't it?
• She can't come today, can she?
• They've finished, haven't they?

Students often know the polarity rule but not the natural intonation. Read them aloud. Use choral repetition. Then move into pair dialogue.

For a focused follow-up, use these WH-question examples and printable practice.

A short video explanation can also help when students need another model before speaking practice:

The classroom routine that saves time

Use a three-step cycle:

• Statement to question: build inversion automatically.
• Question to answer: practise short answers with the same auxiliary.
• Dialogue expansion: add where, why, when, or a tag question.

"If students can ask it fast, they can usually hear it better too."

What doesn't work is spending a whole lesson on rule explanation and then giving five written questions. Students need repeated oral production. Question formation is a movement skill as much as a grammar skill.

7. Related Causative Verbs: Have, Get, Make, Let

These causative constructions are related practice, not extra core auxiliary verbs. In this use, have, get, make and let describe arranging, causing or permitting an action.

Causatives are often treated as advanced grammar, but students meet them early in real life. Parents make children tidy rooms. Teachers let students work in pairs. Managers have assistants schedule meetings. Friends get each other to try new apps.

These forms matter because they express relationships between people, not just actions.

Four causatives, four different relationships

Use sharp contrasts.

• Make expresses force or strong pressure The deadline made the team work faster.

• Let expresses permission The teacher lets students choose their writing topics.

• Have often expresses arrangement or delegation I'll have my assistant schedule the meeting.

• Get often expresses persuasion or successful influence She got her students to practice more by using gamification.

Then add one passive causative:

• I need to get my progress evaluated by the AI.

That last pattern is especially useful because students hear it in service situations all the time: get my hair cut, have my phone repaired, get my car fixed.

Why students confuse them

Partly because the structures differ:

• make/let + object + base verb
• get + object + to infinitive
• have + object + base verb in some causative uses
• have/get + object + past participle for arranged services

So the mistake isn't only about meaning. It's also about form.

Common learner errors include:

• She made me to go.
• He let me to leave.
• I got my brother help me.
• I had repaired my car when they mean someone else repaired it

Those errors are predictable, which is good news for teaching. Predictable errors respond well to structured contrast.

A practical teaching sequence

Start with real scenarios, not terminology.

Write four mini-scenes:

• strict boss
• relaxed parent
• efficient assistant
• persuasive friend

Ask students which verb fits. Then reveal the form.

After that, use short role-plays:

• manager and employee
• parent and child
• tutor and student
• customer and service provider

The service-provider context is particularly strong for passive causatives:

• I had my laptop repaired.
• She got her essay checked.
• We had the room cleaned.

For platform-based practice, causatives work well in writing prompts because students have to choose both meaning and structure. They also connect naturally to classroom management language, which makes them easier to recycle than many "advanced" structures.

What doesn't work well is presenting all causatives in a dense grammar chart with no human context. These verbs describe pressure, permission, arrangement, and influence. If the classroom task doesn't show those relationships clearly, the forms remain abstract.

Seven patterns and what they actually do

These are seven useful patterns, not seven separate classes of auxiliary verb. The three primary auxiliaries are be, have and do; core modals form another group. The passive is a use of be, and causatives are related constructions. Compare the Cambridge guide to auxiliary verbs when you need to identify a verb's job in a sentence.

For a quick diagnostic, ask learners to underline the main verb in She is reading, They have arrived and Does she teach? Then compare I have a bicycle: the same word have now carries the main meaning rather than helping another verb.

Turn the List into Learning Your Next Step

An auxiliary verb list becomes useful only when it drives repeated, visible classroom action.

Check whether a learner needs a clearer explanation, help remembering a form or practice using it in a new context. A short diagnostic and a spoken follow-up can guide that decision.

For do-support, compare a learner's written transformation with a spoken interview question. Distinguish an error such as He no understand from a conversational statement question such as You like coffee? If the task targets the usual interrogative form, ask for Do you like coffee? without claiming that all statement questions are ungrammatical.

A workable sequence is simple:

• Teach one function at a time: do/does/did for negatives and questions is a strong starting point.
• Keep early practice tight: transformations, substitutions, and short oral prompts still matter.
• Shift quickly to meaning: information gaps, pair interviews, and short problem-solving tasks force retrieval.
• Recycle across skills: bring the same auxiliary into reading, listening, dictation, and brief writing.
• Use error logs: note which auxiliary keeps dropping out, then assign targeted follow-up.

Revisit the same pattern in a later lesson with a new sentence. Compare the response with the earlier attempt and decide whether to continue, add support or move on.

That has a practical consequence for course design. Stop teaching auxiliaries as a chapter you finish in October. Build them into the year as a thread. Teach be in the continuous, bring it back in passives, and return to it again in question inversion. Teach have in the present perfect, then reuse it in perfect forms that appear in reading and writing. Teach do for support, then use it again in speaking correction and short review quizzes.

Keep the follow-up manageable: choose a few relevant items, identify the feature to check and give learners a chance to revise. If you assign digital practice, review what the task actually asks learners to do before using its results.

If you use a digital platform, select practice that matches the error you observed and check the learner's response afterward. An activity's game format or completion count does not by itself show that the learner can use the form independently.

Start with the pattern that creates the most friction in your classes. For many groups, that means do in questions and negatives. Run a short cycle, listen for the same error in speech, check for it in writing, then assign one more focused round before moving on. Once that pattern stabilizes, add modals, present perfect, or passive forms.

The goal is straightforward. Turn the auxiliary verb list from a reference sheet into a teaching system.

For digital follow-up, explore the grammar practice guide and the teacher platform overview. Choose a relevant task, assign it to your class and use the results to plan the next review.