Question

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.

Answer 1

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.