将下列句子改为被动语态

1.I sent a letter to you last month.

2. Do we use it for cooking?

3. Where did you build the bridge?

4. Mother tells me a story every day.

5. Can he finish his homework on time?

完成句子

1.当我一个人在家时，我时不时地感到孤独。

2.新机场投入使用已经有一年多了。

3.春天是参观中国园林的最好时间。

4.这一课程涉及很多主题，包括旅游和宾馆。（用被动语态）

5.一天，他躺在草地上，不知不觉睡着了，并且做了一个奇怪的梦。

句型转换

1.We're trying to protect the environment.(对划线部分提问)

　　_________are you trying _________ _________?

2.There used to be a lof cheetahs.（改为反意疑问句）

　　There used to be a lot of cheetahs,______ _________?

3.They made Victor weigh himself just now. （改为被动语态）

　　Victor_____ ______ to weigh himself just now..

4.They weigh about 1,ooo pounds. (对划线部分提问)

　 ______ _______ do they weigh?

5.I think what you said is right. （同义句）

　　I_______ ________you..

6. There's something wrong with the watch .（一般疑问句）

　　________ there ________ wrong with the watch ?

7.I like to go out to play, and I don't like to stay at home.（同义句）

　I prefer to play outside -------  -------stay at home.

句型转换　请根据要求改写下列句子，每空一词。

1. The sandstorms did great harm to many plants and houses. （改为一般疑问句）

__________ the sandstorms __________ great harm to many plants and houses?

2. Jim has stayed in the college for five years.  (对划线部分提问)

_________ _________ has Jim stayed in the college?

3. The students sweep their classroom after school every day.  (改为被动语态)

Their classroom __________ _________ after school every day.

4. Jack is so young that he can’t understand the problem. （保持句意基本不变）

Jack is not old __________ __________ understand the problem.

5. Sierra said, “The movie is going to be exciting.”    （改为间接引语）

Sierra said _________ the movie _________ going to be exciting.