Making Offers and Suggestions: Shall, Can, Could, and May

To offer help to someone, suggest an idea, or make an invitation, English grammar relies on the modal verbs shall, can, could, and may.

1. Making Offers to Help

When you want to do something beneficial for another person, you can make an offer.

A. Can (Informal & Friendly)

  • Use: The most common way to offer help in daily conversations.
  • Example: Can I carry those bags for you?
  • Example: Can I get you anything to drink?

B. May (Formal & Professional)

  • Use: A highly polite, professional, and respectful way to offer service or assistance.
  • Example: May I assist you with your luggage, sir?
  • Example: May I take your coat?

C. Shall (Polite / British English)

  • Use: Often used in questions with I or we to make a polite offer. It is very common in British English.
  • Example: Shall I make some tea?
  • Example: Shall I open the window?

2. Making Suggestions

To propose a plan or offer an idea for a group to do, we use shall and could.

A. Shall We…? (Joint Suggestion)

  • Use: Suggesting an activity for both the speaker and the listener.
  • Example: Shall we go for a walk in the park?
  • Example: Shall we order Chinese food for dinner?

B. Could (Alternative Idea Suggestion)

  • Use: Suggesting one or more options gently, leaving the decision to the listener.
  • Example: We could watch a movie tonight, or we could play a board game.
  • Example: You could try rebooting your computer to see if it fixes the issue.

3. Summary of Offers & Suggestions

ModalFunctionLevel of FormalityExample
CanOffer helpInformal / NeutralCan I help you?
MayOffer help / serviceFormalMay I help you, ma’am?
ShallOffer / Joint suggestionPolite / FormalShall we dance?
CouldPropose optionsNeutral / PoliteWe could meet at 5 PM.