"There is something wrong with this machine.It needs repairing."请问为什么要用”repairing”

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"There is something wrong with this machine.It needs repairing."请问为什么要用”repairing”
"There is something wrong with this machine.It needs repairing."
请问为什么要用”repairing”

"There is something wrong with this machine.It needs repairing."请问为什么要用”repairing”
needs repairing===needs to be repaired
need和require等词后面加动名词必须用主动表示被动,但加不定式时照旧,该用被动还用被动.比如：these trees require(need) looking after carefully＝ these trees require(need) to be looked after carefully.
--
常用：need/require +doing sth（=to be done）（此句型主语大多为物）
例：My room is a mess.It needs _____.
A to be tidying up
B.tidying up
C.to tidy up
D.tidied up
（答案为B）
我的解答够详细了吧不明白再问

need+Ving=need to be done
相当于needs to be repaired)
主语是物的时候加动词ing形式表被动
它需要(被)修理

there are something还是there is something is there something wrong? there is something There is something in the There is something wrong with there is something beautiful是什么意思 There is something ? the light there is something I can there is something shining over there.对something shining提问. is something wrong和 is there something wrong There is something wrong with my pen.对something提问 there is something under the table 为什么要用something there is something in the pond.对something提问如何翻译:there is something to it There is something in the wind. Is There Something I Should Know 歌词 There is something in the wind 1.there is something in the wind.