重点讲解

Where is Harry?

He may be in his room.

I'm not sure.

Where will he go?

He may go to the cinema.

I'm not sure.

Why is he late?

He may be busy.

I'm not sure.

What is he doing?

He may be reading.

I'm not sure.

Why was he late?

He may have been busy.

I'm not sure.

What was he doing?

He may have been reading.

I'm not sure.



B Examples

1 I'm not sure. They may be Australian.

2 I'm not sure. She may be Russian.

3 I'm not sure. They may be Chinese.

4 I'm not sure. They may have been bakers.

5 I'm not sure. She may have been a doctor.

10 I'm not sure. She may have been under fifty.

17 I'm not sure. He may have been tired.

18 I'm not sure. They may be watching television.

19 I'm not sure. She may have been looking for a new job.

20 I'm not sure. They may be standing.