In this article, Upper Intermediate Grammar B2 learners study modal verbs of permission.
You will learn how can, could, may, and might ask for or give permission with different levels of formality.
The key question is: Is the speaker asking permission casually, politely, or formally?
The main rule to remember is: Use modal verb plus the base verb without to, except for semi-modals such as ought toand have to.
You will study permission questions and answers in everyday and formal situations.
By the end, you should be able to choose permission modals that match the situation and tone.
Overview
Modal verbs add meaning to another verb. They express ability, possibility, permission, advice, obligation, deduction, willingness, and politeness.
Modal Verbs of Permission looks specifically at modal verbs of permission. At this level, the goal is to control meaning, tone, and sentence variety with more confidence.
As you read, keep one question in mind: Is the speaker asking permission casually, politely, or formally? This question will help you connect the rule to meaning instead of memorizing the form alone.
You will see permission questions and answers in everyday and formal situations, then practice the topic through corrections, short tasks, and a final review.
Use modal verb plus the base verb without to, except for semi-modals such as ought to and have to.
Rules And Explanation
This section breaks modal verbs of permission into practical rules. Read each rule, study the examples, and notice how the form supports the meaning.
Ability And Possibility
Use can, could, may, and might to talk about ability, possibility, and uncertainty.
She can swim.
It might rain.
Could you help me?
Advice And Obligation
Use should, must, have to, and ought to for advice, rules, and necessity.
You should rest.
Drivers must stop.
We have to leave now.
Deduction
Use must, might, could, and can't to guess from evidence.
He must be tired.
She might be at home.
That can't be true.
Learning tip: Keep checking this question as you read: Is the speaker asking permission casually, politely, or formally?
Detailed Examples
The examples below focus on modal verbs of permission. Read the sentence, then read the note so you can see why the grammar choice works.
Use
Example
Why It Works
Core pattern
She can swim.
This example connects to modal verbs of permission and shows permission questions and answers in everyday and formal situations.
Natural use
It might rain.
This example connects to modal verbs of permission and shows permission questions and answers in everyday and formal situations.
Meaning check
Could you help me?
This example connects to modal verbs of permission and shows permission questions and answers in everyday and formal situations.
Daily English
You should rest.
This example connects to modal verbs of permission and shows permission questions and answers in everyday and formal situations.
Careful writing
Drivers must stop.
This example connects to modal verbs of permission and shows permission questions and answers in everyday and formal situations.
Question form
We have to leave now.
This example connects to modal verbs of permission and shows permission questions and answers in everyday and formal situations.
Formal style
He must be tired.
This example connects to modal verbs of permission and shows permission questions and answers in everyday and formal situations.
Review sentence
She might be at home.
This example connects to modal verbs of permission and shows permission questions and answers in everyday and formal situations.
How This Grammar Works In Context
Modal verbs of permission becomes more useful when it appears inside connected writing, not only in isolated examples. Try using the topic in a short message, a description, a comparison, or an explanation.
A strong example should answer the article question: Is the speaker asking permission casually, politely, or formally? If your sentence answers that question, the grammar is doing real work.
Common Mistakes
These mistakes show what can go wrong with modal verbs of permission. Compare the wrong sentence, the correction, and the reason before you write your own examples.
Common Mistake
Correction
Why
She can to swim.
She can swim.
Use the base verb after most modal verbs.
He musts leave.
He must leave.
Do not add s to modal verbs.
You should to rest.
You should rest.
Most modals are followed directly by the base verb.
How To Correct Your Own Sentence
Find the main grammar structure in the sentence.
Check the words before and after the structure.
Ask whether the meaning matches the grammar form.
Read the sentence aloud and listen for missing words.
Compare your sentence with one correct model sentence from this article.
Practice Exercises
Use these exercises after reading the article. They are designed around modal verbs of permission, so each task should help you use the topic in a specific way.
Write five permission questions from casual to formal.
Underline the words that prove the sentence uses modal verbs of permission.
Rewrite two examples so they test this question: Is the speaker asking permission casually, politely, or formally?
Find one real sentence online or in a book that shows permission questions and answers in everyday and formal situations.
Write a short note explaining how modal verbs of permission changes the meaning of the sentence.
Writing Challenge
Write a short paragraph of five to seven sentences that includes modal verbs of permission. After writing, highlight the grammar pattern and explain how it answers this question: Is the speaker asking permission casually, politely, or formally?
Short Quiz
Answer these questions to check whether you can recognize and use modal verbs of permission without relying only on memory.
What is the key question for Modal Verbs of Permission?
Choose the best example sentence from the lesson.
What should you remember about modal verbs of permission?
What is one common mistake learners should avoid?
Write your own sentence that shows modal verbs of permission.
Answer Key
Is the speaker asking permission casually, politely, or formally?
She can swim.
Use modal verb plus the base verb without to, except for semi-modals such as ought to and have to.
She can to swim.
Answers will vary, but the sentence should show modal verbs of permission clearly and follow the rule.
Related Grammar Articles
These related articles connect naturally with modal verbs of permission and help you build the next layer of grammar control.