把下面的句子变为被动语态``要讲解`(英语高手进)
问题描述：
把下面的句子变为被动语态``要讲解`(英语高手进)
1.We found some jewels in a box
2.The teacher is keeping the pupils at school for a revision.
3.James has left a parcel for you.
4.You must finish the article before Friday.
(要将解)
要讲解 要讲解
答
宾语变主语,根据原来句子选择是现在时,过去时,还是将来时,根据被动句的主语选择是用单数还是复数.答案如下：1 Some jewels are found in a box 2 The pupils are being kept at school by the teacher for a revisio...