Thanks Goodness,lt is much warmer to day than yesterday.Yes,l needn't have worn my coat today中间是填needn't have worn 还是couldn't have worn 还是wouldn't have wornwouldn't have

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Thanks Goodness,lt is much warmer to day than yesterday.Yes,l needn't have worn my coat today中间是填needn't have worn 还是couldn't have worn 还是wouldn't have wornwouldn't have
Thanks Goodness,lt is much warmer to day than yesterday.Yes,l needn't have worn my coat today
中间是填needn't have worn 还是couldn't have worn 还是wouldn't have worn
wouldn't have

Thanks Goodness,lt is much warmer to day than yesterday.Yes,l needn't have worn my coat today中间是填needn't have worn 还是couldn't have worn 还是wouldn't have wornwouldn't have
needn't have worn.在这里使用not have done结构的意思是本不必要做某事却做了,有“生米煮成熟饭”的意思.用于虚拟语气,表示与事实相反.比如这里说今天比昨天要暖和,所以今天本没必要穿外套.
counldn't have done & wouldn't have done
本来不能某事而做了 本来不会去做
自己造了例句
I couldn't have washed my T-shirt.If he were busy today,we wouldn‘t have sent him to Beijing我本来洗不了衬衫的.如果他今天忙,我们就不会送他去北京.(事情已经发生了)

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needn't have worn 表示:本不需要穿外套。(但他已经穿出来了)