1．I was watching TV when Mother came in．（用while替換）

          I was          TV，Mother came in．

2．Mr. Wang told us, “We will have a long holiday．”（改寫(xiě)為間接引語(yǔ)）

Mr. Wang told us                   have a long holiday．

3．They will go to Beijing on vacation next week．

They will have enough time．（合并為含if的復(fù)合句）

They will go to Beijing on vacation next week          they          enough time．

4．You should come here by bike．（改為否定句）

You                   here by bike．

5．Ted saw an alien yesterday．（改寫(xiě)為一般疑問(wèn)句）

          Ted          an alien yesterday?

6．The boy was riding a bike when the UFO landed? （對(duì)劃線部分提問(wèn)）

          was the boy          when the UFO landed?

7．John did his homework last night．（用at nine o'clock last night替換last night）

John                   his homework at nine o'clock last night．

8．Brazil will win the World Cup next time．（改寫(xiě)為一般疑問(wèn)句）

           Brazil          the World Cup next time?

9．I got to school late because the traffic was very busy．（對(duì)劃線部分提問(wèn)）

                    you get to school late?

10．Could you please open the window? （改寫(xiě)為同義句）

          you mind          the window?