[Modal auxiliaries] Making Suggestions: Let's/Why don't/Shall I/We

Let's go for a drink! (One of your close friends.)

Why don't we go for a drink! (A secret admirer)

Shall we go for a drink? (A handsome gentleman)

Let's go, shall we? (正式)

Let's go, okay? (非正式)

未來式

Let's go to a movie tomorrow.

Why don't we go to a movie tomorrow?

Shall we go to a movie tomorrow?

1.

A: A new Japanese restaurant just opened downtown. Let's eat there tonight.

B: Great idea! I'd like some good sushi.

A: Why don't you(not we) call and make a reservation (訂位只有一人)? Make it for about 7:30.

B: No, let's make it for 8:00. I'll be working until 7:30 tonight.

4.

A: Shall we go to the office or have dinner first?

B: Let's go to the office first; then we can take our time over dinner.

A: Why don't we go to Bella Monica?

Shall 有劃好要去

Why don't we 沒計劃