May / Can
Requesting permission and offering suggestions
Giving permission, making requests and offering suggestions require the speaker to be aware of levels of formality.
Some expressions are used with persons of authority and with people whom we are unfamiliar while others are used with peers and people with whom we are familiar.
Permission
| MORE FORMAL | LESS FORMAL |
|---|---|
Use may to ask permission. |
Use can to ask permission in informal situations. |
May I smoke here? |
Can I smoke here? |

Request
| MORE FORMAL | LESS FORMAL |
|---|---|
Use would or could to ask someone politely to do something. |
Use will or can to ask someone to do something in more informal situations. |
Would you please smoke outside? |
Will you smoke outside please? I'd like you to smoke outside please. (would+like – Is used by a person of authority) |
Suggestion / Invitation
| MORE FORMAL | LESS FORMAL |
|---|---|
Use shall or would you like to suggest or invite someone to do something. |
Use let's, why don't we or how about to suggest or invite someone to do something in a less formal situation. |
Shall we go outside? |
Let's go outside? |
Practice
Restating a Request
What is the level of formality?
Practice 2
Requests, Suggestions and Advice
- Decide on the best modal phrase to complete the sentence.
- An asterisk (*) indicates an incorrect answer.
