科研之友
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摘要
<正>1.混合虚拟语气此类句子的主从句谓语动词表示的动作在时间上不一致。例如If I had followed your advice yesterday,I would not make such a mistake now2.含蓄虚拟条件句用withou t/but for/but/or/o therwise或上下文表达。例如:Without water,man couldn’t live in the world.3.倒装含有were/should/had的从句,if可省略,were/should/had提前。例如:Were it not for you,I would have failed.4.主语从句的虚拟谓语用"should (可省)+v."
