as if用于虚拟语气中，后接内容与现在事实相反，主句谓语用过去式，对吗

Question

如题所述

Answer 1

主句谓语动词该用什么时态就用什么时态，与as if虚拟句没有关系，倒是as if虚拟句自身的时态用法遵循固定的规则。后接内容与现在事实相反时，要分两种情况：1. as if虚拟句的动作发生在现在，用一般过去时（be动词用were）。例如He appears as if he were the boss(他表现得像是老板似的) ［事实上他现在不是老板］2. 虚拟句的动作发生在过去，用过去完成时。例如He acted as if he had been there（他表现得跟去过那儿似的）［事实上当时他没去那儿］。

Answer 2

as if / as though用于虚拟语气，在引起的状语从句中，谓语动词形式用过去式（be动词用 were)表示与现在事实相反。追答

as if / as though 从句虚拟语气动词不受主句动词的支配。
(1)主、从句同时，从句一般过去时。如：
He passed the guard as if he didn’t exist.
(2) 主、从句同时，且在进行从句用过去进行对。如：
He heard a noise, as if someone were breathing.
(3) 从先、主后，从句用过去完成时。如：
How wild his white hair looked, as if he had been electrified.
(4) 主先、从后发生的动作，从句用过去将来时。如：
He opened his lips as if he would say something.

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Answer 3

不一定的。as if从句虚拟时，与主句不一定呼应。
如：
He walks as if he were drunk.
He looks as if he were my son.
He talked as if he had been to New York.追问

那是从句谓语用过去式吗

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