［動(dòng)詞的語態(tài)］need/want/require/worth

　　Your hair wants cutting.　你的頭發(fā)該理了。

　　The floor requires washing. 地板需要沖洗。

　　典型例題

　　The library needs___， but it'll have to wait until Sunday.

　　A. cleaning　 B. be cleaned　 C. clean　 D. being cleaned

　　答案A. need (實(shí)意) +n /to do，need (情態(tài))+ do，當(dāng)為被動(dòng)語態(tài)時(shí)，還可need + doing. 本題考最后一種用法，選A.如有to be cleaned 則也為正確答案。