小学语法词汇辨析：need/want/require/worth

概要：当 need, want, require, worth(形容词)后面接doing也可以表示被动。如：Your hair wants cutting.你的头发该理了。The floor requires washing. 地板需要冲洗。The book is worth reading.这本书值得一读。典型例题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 (实意) +n /to do，need (情态)+ do，当为被动语态时，还可need + doing. 本题考最后一种用法，选A。如有to be clean 则也为正确答案。

　　当 need, want, require, worth(形容词)后面接doing也可以表示被动。

　　如：Your hair wants cutting.你的头发该理了。

　　The floor requires washing. 地板需要冲洗。

　　The book is worth reading.这本书值得一读。

　　典型例题

　　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 (实意) +n /to do，need (情态)+ do，当为被动语态时，还可need + doing. 本题考最后一种用法，选A。如有to be clean 则也为正确答案。