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will do will be done
have/has done have/has been done
had done had been done
would do would be done
present tense
present progressive tense
past tense
past progressive tense
future tense
present perfect tense
past perfect tense
past future tense
主动语态变成被动语态时要注意以下几点 :
1 . 含有双宾语的主动句变成被动句时 , 如果把直接宾语变成被动语态主语时需要在间接宾语和谓语动词之间加上介词 “ to ﹨for”.
如 : Mary gave me a pen .
间接宾语作主语：I was given a pen by Mary .
直接宾语作主语：A pen was given to me by Mary .
2 . 在 “ 使役动词（let , make ,have）,感官动词（ see , hear , notice , watch , feel ）” 等后面加不定式做宾语补足语时省略不定时符号 “ to ” , 但改成被动句时应加上 “ to ” .
They made him go there alone
He was made to go there alone by them.
3 . 如果主动句中的谓语是短语动词 (动介结构，动副结构）, 变为被动句时 , 短语动词的介词或副词不可以丢掉 .
如 : They took good care of the boys .
The boys were taken good care of by them.
4.含有情态动词的被动语态：can/may/might+be+done
如：We can repair this watch in two days.
This watch can be repaired in two days by us.
1 . He tells us a story every evening .
We are told a story every evening by him .
A story is told to us every evening by him .
2. They should do it at once.