小博士：仔细观察下面这段对话，你会发现下面的句子中出现了已经学过的现在进行时，我们已经学过现在进行时是用于表示正在发生或进行的事情。可是用这个观点来解释下面这段对话却有些不通，这是怎么回事？请同学们仔细思考后来回答问题。

A：Hi, Tom, what day is it today?

B/C/D：Today is Thursday.

A：Can you come over to my house on Saturday?

B：OK, I'd love to.

C：I'm sorry, I can't. I'm having a piano lesson.

D：I'm sorry, too. I'm looking after my grandparents.

问：此处的现在进行时是用来表示此刻正在发生的事情吗？如果不是，那么此处的进行时是用来表示什么时候发生的事情呢？

答：________________

His teacher saw 　　　　  　　　　  football.

2. With the help, she found her mother at last. (改为同义句)?

　　　　  the help, she 　　　　  find her mother at last.

3. “My mother bought a pair of trousers for me.”  he said. (连接成一句)?

He said his mother 　　　　  bought 　　　　  a pair of trousers.

4. He said to me, “Don’t forget to change her water.” (用不定式转换)?

He 　　　　　　   me 　　　　　　   　　　　  　　　　  to change her water.

5. He joined the army three years ago. We didn’t see each other after that. (合并成一句)?

We haven’t seen each other 　　　　  he joined the army three years ago.

6. They have had this car for one year. (改为一般过去时)?

They  　　　　  this car one year 　　　　 .

7. It took me half a month to read the book. (改为同义句)?

I  　　　　  half a month 　　　　  the book.

8. He hasn’t finished his homework yet. He says. (改为复合句)?

He says 　　　　  　　　　  hasn’t finished his homework.

9. I hear Miss King will be back in a month. (改为一般疑问句)?

 　　　　  you 　　　　  Miss King 　　　　  be back in a month?

10. People say that all around it is sand. (改为同义句)?

It 　　　　  　　　　  that all around it is sand.

She has been collecting wine bottles for two years．(改为一般过去时)

　　She _____ wine bottles _____ _____ _____ .