把下面两句变为被动语态: 1．We always keep the classroom clean. 2．His mother has made him do the housework. 题目和参考答案——青夏教育精英家教网—

题目内容

把下面两句变为被动语态：

1．We always keep the classroom clean.

2．His mother has made him do the housework.

答案：
解析：

　　答案：

　　1．The classroom is always kept clean.

　　2．He has been made to do the work by his mother.

　　解析：如果主句结构的谓语动词后接复合宾语(宾语＋宾语补足语)，变被动语态时，只能将宾语变为被动结构的主语，宾语补足语则成了被动结构中的主语补足语。注意感官动词see, watch, hear, feel等和使役动词make, let, have等后接不带to的不定式短语作宾语补足语时，变被动语态时须补上to.