He did it as if he were an expert.从句表示的动作发生在过去,为什么不用过去完成时

He did it as if he were an expert.从句表示的动作发生在过去,为什么不用过去完成时 It seems as if he were an expert 为什么谓语动词要用were 而不是was 英语宾语从句但如果从句中有明确表示过去的时间状语,则从句应用一般过去时,不用过去完成时；如：?He said he ha 英语一段话不懂从句动作先于主句动词动作 过去时 过去完成时（be的过去式为 were） 从句动作与主句动作同时发生 现在 It seemed as if the world was at an end!为什么不用过去完成时 He speaks English as if he were an Englishman.这里的he不是单数吗为什么用 从句的动作与现在事实相反，而主句的动作与过去事实不符。 如： If he were * today,we would h 从句的动作与现在事实相反，而主句的动作与过去事实不符。 如：1.If he were * today,we would he speaks as if he were an Englishman 这里的 were可以用 He behaves like an adult.He behaves as if he were an adult. he was very ill before he died为什么he was very ill先完成的动作不用过去完成 "He looks as if he were hungry"是表语从句还是方式状语从句?如何判断?