As time went by,(the plan stuck to) proved_fairly practical 为什么不是was proved,As time went by,(the plan stuck to) proved fairly practical 为什么不是was proved,不是被动吗,难道是因为fairly practical 的存在?如It‘s ha

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As time went by,(the plan stuck to) proved_fairly practical 为什么不是was proved,As time went by,(the plan stuck to) proved fairly practical 为什么不是was proved,不是被动吗,难道是因为fairly practical 的存在?如It‘s ha

As time went by,(the plan stuck to) proved_fairly practical 为什么不是was proved,As time went by,(the plan stuck to) proved fairly practical 为什么不是was proved,不是被动吗,难道是因为fairly practical 的存在?如It‘s ha
As time went by,(the plan stuck to) proved_fairly practical 为什么不是was proved,
As time went by,(the plan stuck to) proved fairly practical 为什么不是was proved,不是被动吗,难道是因为fairly practical 的存在?
如It‘s hard to find,因为hard这一形容词的存在,采用主动表被动?

As time went by,(the plan stuck to) proved_fairly practical 为什么不是was proved,As time went by,(the plan stuck to) proved fairly practical 为什么不是was proved,不是被动吗,难道是因为fairly practical 的存在?如It‘s ha
prove在这里是"证明是;结果是;事实说明"的意思,用作连系动词,主动表被动,
可用于以下句型:
1.prove+形容词 ,如The handbook proved useful.这本手册证明很有用.
2.prove+名词 ,如She proved a very strict teacher.结果证明她是一位非常严格的老师.
3.prove+介词短语或副词 ,如 Perhaps this book will prove of some use to you in your studies.也许这本书会对你的研究有用处.
4.prove+动词不定式,As time went on,Einstein's theory proved to be correct.随着时间的推移,爱因斯坦的理论证明是正确的.
It's hard to find...这是固定句型,It is + adj.+ to do ...

和前后那些词都无关 prove(被证明)这个词是主动表被动的 所以不需要加be动词 意义是被动 但是使用规则和一般行为动词一样