I've already seen it.I saw it on television last year.为什么第一句用过去分词,第二句用过去式?过去分词的作用是什么？

来源：学生作业帮助网 编辑：作业帮 时间：2024/12/01 15:35:16
I've already seen it.I saw it on television last year.为什么第一句用过去分词,第二句用过去式?过去分词的作用是什么？
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I've already seen it.I saw it on television last year.为什么第一句用过去分词,第二句用过去式?过去分词的作用是什么？
I've already seen it.I saw it on television last year.
为什么第一句用过去分词,第二句用过去式?
过去分词的作用是什么？

I've already seen it.I saw it on television last year.为什么第一句用过去分词,第二句用过去式?过去分词的作用是什么？
因为第二句有last year 这个过去时的提示词,因此,只能用过去时
如果第二句是,already,那么可以用完成时
如果是since last year ,则也是完成时
你要是问过去分词的作用是什么,我认为这个问题太大,请另行专门提问
我要是回答很多,估计对你这个现在完成时里的过去分词会离题万里
现在完成时的结构是,have has +过去分词,只是一个结构,不必一个个去研究他的性质,意义不大
在别的语境中,过去分词是用来表被动,做过去分词定语,还有被动语气里用的

我已经看过它了，去年我在电视上看了它。
第一句现在完成时，有already，用于完成时have done 结构；第二句有last year，用过去时态。

强调的不同，第一句强调做过的事产生的结果，第二句强调做过那件事，陈述。

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