Question

Let him __________ the classroom for us..

A. cleans    B. cleaning    C. to clean    D. clean

Answer

D

【解析】句意：让他为我们打扫教室。短语let sb. do. sth.：让某人做某事；结合句意和语境可知选D。

点睛：英语中跟不带to的不定式的词有感官动词和三个使役动词（let/make/have），具体可归纳如下：1感（feel）2听（listen to/hear）3使役（let/make/have）4看（see/look at/watch/

find/notice…）5半帮助（help），这些动词后可跟不带to的动词不定式做宾语补足语，help跟的动词可加to也可省略to。例如，I often hear him sing in the next room.注意：感官动词后可跟动词现在分词做宾语补足语，表示某人正在做某事，例如，I heard him singing in the next room when I went past his room.