当 need, want, require, be worth后面接doing时,表示的是被动意义。例如:
Your hair wants cutting. 你的头发该理了。
The floor requires washing. 地板需要冲洗。
典型例题
The library needs___, but itll 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 cleaned 则也为正确答案。
【[动词的语态]need/want/require/worth】相关文章:
★ [定语从句]what/whatever; that/what; who/whoever
★ [虚拟语气]It is (high) time that
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