(2)虚拟语气在同位语从句和表语从句中的运用。
作表示建议、要求、命令等的名词advise、idea、order、demand、plan、proposal、suggestion、request等的表语从句和同位语从句,从句中的谓语动词用“(should)+动词原形”。
His suggestion that we (should) go to Shanghai is wonderful.
(3)虚拟语气在主语从句中的运用。
在主语从句中,谓语动词的虚拟语气用“should+动词原形”的结构,表示惊奇、不相信、理应如此等。
It is necessary (important,natural,strange,etc.) that we should clean the room every day.
It will be desired (suggested,decided,ordered,requested,proposed,etc.) that she should finish her homework this afternoon.
3.虚拟语气在其他场合的运用
(1)虚拟语气在as if/as though、even if/even though等引导的表语从句或状语从句中,如果从句表示的动作发生在过去,用过去完成时;指现在状况,则用一般过去时;指将来状况则用过去将来时。
He did it as if he were an expert.
Even if she were here,she could not solve the problem.
(2)虚拟语气用于定语从句中。
这种从句常用于句型“It is(high)time(that)...”中,定语从句的谓语动词有一般过去时(be用were)或should+动词原形,意思是“(现在)该……”。
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