Question

1.Teachers should encourage students to speak out their own thoughts. (改成含被动语态的句子)

Students ____________________ speak out their thoughts by teachers.

2.Parents must stop children from playing computer games too much. (改成含被动语态的句子)

Children ____________________ playing computer games too much by parents.

3.Shops can’t sell cigarettes to teenagers. (改成含被动语态的句子)

Cigarettes ______________ to teenagers by shops.

4.Students should be taught how to manage their own lives by their parents. (对划线部分提问)

______________ students __________ how to manage their own lives?

Answer

1. should be encouraged to

2. must be stopped from

3. can’t be sold

4. By whom should be taught

【解析】

1.句意：教师应该鼓励学生说出自己的想法。改为被动语态就是说“学生应该被鼓励说出自己的想法”，“应该被做…”是should be done，这里是“被鼓励去做…”，也就是be encouraged to do…，故填should be encouraged to。

2.句意：父母必须阻止孩子玩过多的电脑游戏。改为被动语态就是说“孩子必须被阻止玩过多的电脑游戏”，“必须被做…”是must be done，短语“被阻止做…”是be stopped from doing…，故填must be stopped from。

3.句意：商店不能向青少年出售香烟。改为被动语态就是说“香烟不能被销售给青少年”，“不能被做…”是can’t be done，动词“销售”sell的过去分词是sold，故填can’t be sold。

4.句意：学生应该被父母教导如何管理自己的生活。划线部分是“他们的父母”，所以是在问“由谁”，用By whom发问，其后加一般疑问句，原句情态动词should提前，其他部分不做改变，故填By whom should 和be taught。