用适当形式填词 I think the machine needs _______(repair)书本答案是repairing,不是need + to do to repair正确吗?

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用适当形式填词 I think the machine needs _______(repair)书本答案是repairing,不是need + to do to repair正确吗?

用适当形式填词 I think the machine needs _______(repair)书本答案是repairing,不是need + to do to repair正确吗?
用适当形式填词 I think the machine needs _______(repair)
书本答案是repairing,不是need + to do
to repair正确吗?

用适当形式填词 I think the machine needs _______(repair)书本答案是repairing,不是need + to do to repair正确吗?
repairing
need to do 需要做某事
need doing 是需要被做有被动的意思
如;I need to wash my clothes.
My clothes need washing.
need doing = need to be done
I need to mend my bike.
My bike needs mending

need后面就是加ing 初中时就懂了吧 这个不用解释 你这么记就可以了

need doing = need to be done
主动表被动的形式
类似的还有want require

need/ want/require+to be done =need/ want/require+doing.也就是说,用不定式的主动表示被动的含义。
如花需要被浇水,可以说:The flower needs to be watered.=the flower needs watering.