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(3)把主动语态中的主语放在介词by之后作宾语，将主格改为宾格。例如： All the people laughed at him. He was laughed at by all people. They make the bikes in the factory. The bikes are made by them in the factory. He cut down a tree. A tree was cut down by him. 五、含有情态动词的被动语态 含有情态动词的主动句变成被动句时，由“情态动词+be+过去分词”构成，原来带to的情态动词变成被动语态后“to”仍要保留。 We can repair this watch in two days. This watch can be repaired in two days. They should do it at once. It should be done at once. 六、特殊情况 1.He made the boy work for two hours yesterday. The boy was made to work by him for two hours yesterday. 2.Mother never lets me watch TV . I am never let to watch TV by mother. 3.Jack gave Peter a Christmas present just now. (1)A Christmas present was given to Peter by Jack just now. (2)Peter was given a Christmas present by Jack just now. (责任编辑：admin) |