第1个回答 2008-10-07
He was not allowed to study with his friends by his parents.
I was allowed to go to the movies on friday night by them.
She was not allowed to get ears pierced by her mather.
Mistakes should be corrected by students.
The students was ask to make a dialogue.
先找出句中的宾语作为主语，然后加上谓语，再加宾语。（被动其实就是在谓语动词前加be动词，谓语变成过去式）例如：我打你。I hit you.
改被动： 你被我打。You are hitted by me.
第2个回答 2008-10-07
He isn't allowed to study with friends by his parents
I'm allowed to go to the movies on friday night by them
She wasn't allowedto get ears pierced by her mather
The mistakes should be correct by the student
Dialogue is asked to be made by the student
主动变被动时，把宾语变为主语 +be +done（动词的被动语态）+by+原来的主语（by即后面的部分可以省略）
第3个回答 2008-10-07
例如：
第一句中： “他”的家长不允许他和朋友们一起学习
被动： “他”不被他的家长允许去和他的朋友们一起学习
he isn't allowed to study with his friend by his parents.
这个套路你明白了吗？
原来谓语动词后面的宾语现在要改成主语 而原来的主语要改成由 by ** 的形式
i am allowed to go to the movies on friday night by them.
she wasn't allowed to get ears pierced
bu her father.
students are asked to correct their mistakes .
ps:注意时态要一致~~
第4个回答 2008-10-07
1 He is not allowed to study with friends by his parents
2 I'm allowed to go to the movies on friday night by them
3 She wasn't allowed to get ears pierced by her mother
4 Students' mistakes should be correct
5 The students are asked to make a dialogue
其实就是顺序换一下，把动词换作Be+done的形式