你想看看对方的东西，可以说：
A.Can I have a look? B. May I come in? C. Let’s go.
当你问别人时间时说：
A:What’s the time now? B.What’s this? C.What’s that?
当你想知道远处的课桌上放着什么，你可以说：
A. What’s that in the desk?
B. What’s that on the desk?
C. What’s this on the desk?
你想问苏阳那个照相机是否是她的，你可以问：
A. Is that your camera? B. Can I have a look? C. What’s that?
当别人问你这是什么，你回答说：
A.Yes,it is. B.It is a… C.No,it isn’t.