一、并仿照例子，运用括号中的时间，把下列句子改写成为过去时态。
They were so busy yesterday. Ex: They are so busy today. (yesterday)
1. He is at school now. (yesterday morning)
_____________________________________________
2. I am not here. (last night)
_____________________________________________
3. They are at home now. (two days ago)
_____________________________________________
4. There are some books on the bookshelf. (yesterday)
_____________________________________________
5. She isn’t in the restaurant today. (two hours ago)
_____________________________________________
6. We aren’t at school in the afternoon. (last Sunday)
_____________________________________________
7. Is she in the classroom now? (the day before yesterday)
_____________________________________________
8. Are they in the library today? (last week)
_____________________________________________
9. It’s rainy and cool today. (yesterday)
_____________________________________________
10. The bookstore is crowded now. (last Monday)二、请仿照例子，把下列句子改成否定句和一般疑问句，并进行回答。
Ex: I was at home yesterday morning.
I wasn’t at home yesterday morning.
Were you at home yesterday morning?
Yes, I was.No, I wasn’t.
1. Mrs. White was a teacher two years ago.
否定句：___________________________________________ 一般疑问句：________________________________________ 肯定/ 否定回答：____________________________________ 2. The film was so interesting.
否定句：___________________________________________ 一般疑问句：________________________________________ 肯定/ 否定回答：____________________________________ 3. The children were in the gym before two o’clock.
否定句：___________________________________________ 一般疑问句：________________________________________ 肯定/ 否定回答：____________________________________ 4. I was so tired yesterday.
否定句：___________________________________________ 一般疑问句：________________________________________ 肯定/ 否定回答：____________________________________ 5. My father was in the factory last Sunday.
否定句：___________________________________________ 一般疑问句：________________________________________
肯定/ 否定回答：____________________________________。