关于主、被动语态的转化。

Question

给出原因，或解释
正确形式填空
1,It is said that three quarters of the world's books an newpapers ______(write)in English.<用完成时态还是过去时态啊？>
2.The workers _____(make)_______(work) for 12 hours by the boss everyday.这句话什么意思啊？
3.He is often heard ______ (sing) in the room.

===========
句型转换。
4.Is the song sung by the childen?(变主动语态。)
__ the children ______ the song?
5.People plant many trees on either side of the street each year.
（变被动语态）
6.Many trees are _______ on _____ sides of the streer each year.{either在主被动语态的转化中需要注意什么吗？}
7.Two years ago we used that machine to make shoes for children.(变被动语态)
Two years ago that machine ______ ______ _______ _________shoes for children.
选择。
8.Some children are made _______ a lot of homework after school.<前面的动词为什么是make啊？？>
A，do B.doing C.to do D.done
9.I feel very happy that I _____to be the host.<用什么时态？>
A.choose B.am chosen C.was chosen D.have chosen
A.choose

Answer 1

1.It is said that three quarters of the world's books and newpapers (were written) in English.
据说世界上四分之三的书籍和报纸都是用英文书写的。
这里用过去时比较合适，尽管用过去完成时态也符合语法，但逻辑上显得不很严谨。

2.The workers (are made) (to work) for 12 hours by the boss everyday.
老板让这些工人每天工作12个小时。（即这些工人每天由老板驱使干12小时的工作）
make sb do sth 使某人做某事 变为被动语态时应为 sb be make to do sth

3.He is often heard (to sing) in the room. （人们）常 听到他在屋里唱歌。
hear sb do sth 听到某人做某事 变为被动语态时应为 sb be heard to do sth

4.Is the song sung by the childen? 这首歌是由孩子们唱的吗？
（Do）the children (sing) the song? 孩子们是唱这首歌吗？

5.People plant many trees on either side of the street each year.
人们每年都在街道两边种很多树。
Many trees are planted by people on either side of the street each year.
每年都有很多树被人们种在街道两旁。

6.Many trees are planted by people on either side of the street each year.
either在主被动语态的转化中不需做变化，照抄下来就好。

7.Two years ago we used that machine to make shoes for children.
两年前，我们用那个机器做童鞋。
Two years ago that machine （was）(used) (to) (make)shoes for children.
两年前，那个机器被用来做童鞋。

8.Some children are made （to do） a lot of homework after school. ( C )
一些孩子在放学后要（被迫使、驱使）做很多的家庭作业。
英语中有make sth do sth 的用法，make在这里含“驱使”的意思，强迫的意味较浓。

9.I feel very happy that I （was chosen）to be the host. （C）
我很开心能被选为主持人。（这里用过去时比较合适，表达已被选为主持人，感觉很开心）
这里B选项也符合语法，只是逻辑上欠佳。体会下面的句子：
I feel very happy that I am often chosen to be the host.
我很开心，我经常被选为主持人。

Answer 2

1.用一般现在时的被动语态，即are written
2.意思是工人们被老板要求每天工作12个小时，应该填are made/to work
3.to sing,表示他经常被听到一个人在房间里唱歌
4.Are/singing
5.Many trees are planted by people on either side of the street each year.
6的答案同5，either在主被动语态中没有变化，只是在否定句中需要改为neither
7.was usedto make
8.横线上填to make,这句话是说孩子们被要求做很多作业，所以用make
9.用一般过去式，因为我被选为主持人是过去发生的事
解释如果不太详细还请楼主见谅，呵呵~

Answer 3

正确形式填空
1,It is said that three quarters of the world's books an newpapers _written_____(write)in English.<用完成时态还是过去时态啊？>
2.The workers __made___(make)_working______(work) for 12 hours by the boss everyday.这句话什么意思啊？工人们被老板要求每天工作12小时
3.He is often heard _singing_____ (sing) in the room.

===========
句型转换。
4.Is the song sung by the childen?(变主动语态。)
Are__ the children __singing____ the song?
5.People plant many trees on either side of the street each year.
（变被动语态）Many trees are plant on either side of the street by people each year.
6.Many trees are plant_______ on _either____ sides of the streer each year.{either在主被动语态的转化中需要注意什么吗？}不需要
7.Two years ago we used that machine to make shoes for children.(变被动语态)
Two years ago that machine _was_____ _used_____ __to_____ _make________shoes for children.
选择。
8.Some children are made ___C____ a lot of homework after school.<前面的动词为什么是make啊？？> 被要求
A，do B.doing C.to do D.done
9.I feel very happy that I _C____to be the host.<用什么时态？> 我被选，已经完成
A.choose B.am chosen C.was chosen D.have chosen
A.choose