These windows need ______. Can you do them?

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问题 These windows need ______. Can you do them?

选项 A、clean
B、cleaned
C、to clean
D、cleaning

答案D

解析 need后面接动名词时,主动表被动。need doing与need to be done的含义是一样的。本题的正确答案选D。[拓展]want,need后面接动名词形式表示被动的含义,构成 sth. need/want doing (=sth. need/want to be done)的结构。例:Those flowers need watering/to be watered.那些花需要浇水了。The house needs cleaning/to be cleaned.房间需要打扫了。
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