What Are Modal Verbs in English Grammar: A Beginner’s Guide

Modal verbs in English grammar, also called auxiliary verbs and helping verbs, give depth and meaning to phrases. They help us understand the speaker’s intention and give context to what is said. Get to know what modal verbs exist and how to use them correctly.

Introduction to Modal Verbs in English Grammar and Their Functions

In English, modal verbs do a lot of the behind-the-scenes work to make certain our communication is as clear as possible. See the table to find out the key modal verbs in English grammar and their functions.

How to Write Sentences Using Modal Verbs in English Grammar

Modal verbs follow a simple pattern in English sentences: SUBJECT + MODAL + BASE VERB + REST OF SENTENCE. The subject (like «I», «she», or «the students») comes first, followed by the modal verb (can, will, should, etc.), then the main verb in its base form (without «to» or any endings), and finally any additional information. Explore the key examples of modal verbs in English grammar usage.

Talking About the Future

Will is one of your go-to modal verbs in English Grammar for future events. Shall works too with «I» and «We», but it sounds formal and old-fashioned, especially in American English. Here are some examples:

• He will forget his umbrella if you don’t remind him.
• What will it be like, living in the 21st century?
• We’ll all be dead in a hundred years.
• Stop crying! It won’t make things any better, you know.

Expressing Personal Plans

When you’re stating your intentions, will is the standard choice. Shall can work with «I» and «We», but again, it’s less common in everyday speech. Example uses:

• I’ll be back in a minute.
• I won’t ever speak to him again.
• We will overcome all difficulties.

Making Offers and Suggestions

British English uses shall for questions when offering help or making suggestions. American version typically sticks with will or other modal verbs in English grammar constructions. Usage examples:

• Will you help me with my homework? (request)
• No. I won’t. (refusal)
• I’ll do it for you if you like. (offer)
• Shall I give you a hand with the dishes? (British offer)
• Shall we buy her a present? (suggestion)

Describing Abilities

Can talks about general abilities. Could describes past abilities or helps make polite requests. Avoid using could for particular past events that actually happened – use «managed to» instead. A few examples:

• I can speak Chinese, but I can’t write it.
• She could swim for miles when she was younger.
• She finally managed to pass the exam. (not «could pass»)
• Can you close the window, please? (request)

Asking for Permission

Can is one of casual and common modal verbs in English grammar. May sounds more formal. Could and might are even more polite but only for asking permission, not giving it.

• Can I have another piece of cake, Dad?
• No, you can’t. You’ll make yourself sick.
• Do you think I could leave early tonight?
• You may leave at 5:30 if you like.
• Might I have a word with you? (very formal, British)

Discussing Hypothetical Situations

Would appears in conditional sentences and polite requests. It signals that something isn’t real or definite. Sample uses:

• I would love to travel round the world. (if I had the chance)
• What would you do if you won a lot of money?
• I wouldn’t have gone, if I’d known he was going to be there.
• Would you like some tea? (polite invitation)

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Expressing Possibility

May and might suggest something could happen. Could implies it’s less likely. Can appears mainly in questions about possibility, or to mean «sometimes». Examples include:

• She may go to Paris tomorrow.
• They might be meeting her.
• Joe might have missed the train.
• Where can they be?
• Learning English can be fun.
• Don’t touch that wire. It could be dangerous.

Showing Certainty

Must modal verbs in English grammar constructions express a very strong certainty – stronger than will. Can’t shows you’re certain something isn’t true – stronger than won’t. For past certainty, use must have and can’t have. Examples:

• Joe must be at least 45. (I’m sure he is)
• No, he can’t be over 40. (I’m sure he isn’t)
• He must have graduated years ago. (I’m certain he did)
• We can’t have been at college together. (I’m certain we weren’t)

Stating Obligations

Must creates strong obligations. For past obligations, use had to. To show there’s no obligation, use don’t have to or don’t need to. Must not means something is forbidden. Use cases:

• You must finish this job by tomorrow.
• He had to finish the job by the next day.
• You don’t have to do it until next week. (it’s not necessary)
• You must not smoke in the cinema. (it’s forbidden)
• You needn’t have bought me a present. (but you did anyway)

Giving Advice and Suggestions

Should and ought to help give advice or make suggestions. They’re interchangeable, though should is more common.

• You should give up smoking. (advice)
• We ought to go to that new Japanese restaurant sometime. (suggestion)
• The farmers should have been consulted. (but they weren’t)
• You shouldn’t work so hard, you know.

Indicating Probability

Should and ought to express what you expect to happen, but they’re not as strong as must or will. For example:

• Their meeting should be over now. (I expect it is)
• He ought to be home at 5 o’clock today. (I expect he will be)
• They should have received our letter by now. (I expect they have)

Final Words on Modal Verbs in English Grammar

As you can see, modal verbs in English grammar are essential for many functions. Now you have seen how they are used, try putting them into practice when you speak and write.

Frequently Asked Questions About Modal Verbs in English Grammar