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英语语法He acted as if he _____A___ everything in the world.A.kn

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英语语法
He acted as if he _____A___ everything in the world.
A.knew B.knows C.has known D.won't know
as if的虚拟句子不是要有had+Ved吗?这里为什么没有had呢?
He acted as if he _____A___ everything in the world.
A.knew B.knows C.has known D.won't know
as if的虚拟句子不是要有had+Ved吗?这里为什么没有had呢?
答：你的这个观点是错误的.as if 从句,如果表示虚拟语气的话,是用相应的过去时态,不只是had +pp这一种,还有一般过去时,过去进行时,过去将来时等等.一句话,就是用比相应的真实情况往前去（过去）的一种时态来表示.
比如,他不是一个专家（he is not an expert.）,可他讲话的样子好象是个专家似的：He speaks as if he was an expert.(将现在时变成过去时,就可以表达虚拟语气了）.
再比如,他没有去过美国.（he hasn't been to the USA.) 可他说话的样子,好象他去过美国似的：He speaks as if he had been to the USA.( 将现在完成时向前进一步,变成过去完成时 had +pP)
原题句中的实情是：He doesn't know everything in the world.
当然,如果此人一惯有这种作风,主句时态不妨用一般现在时：He often acts as if he knew everything in the world.这样楼的疑问是不是就没有了呢?
he acted as if he everything in the world . He acted as if he ___everything in the world.A.knew B.knows He talks as if he -----everything in the world.AknowBknewcCk he talked a lot as if he knew everything in the world. he acted as if he had never lived in england before acted是什么 he acted as if nothing had happened. he acted as if he had never lived in England before .He acted as if he had never lived in England before 划分句子成分 He acted as if he had never lived in England before. He acted as if he had never lived in England before.这句话中为什么最 He acted as a doctor at the People Hospital.(acted被划线,选同义词) he always acted as if he thought I wasn't one of the family怎