It looks as if it___ rain.going to 请问这是对什么时候的虚拟?

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/21 06:16:13

这个没有用到虚拟语气.
句子的意思是天看上去要下雨了,用将来时.
再问：怎么看出来不是虚拟？为什么这句就用虚拟了she looks as if she would cry.
再答：虚拟语气是表示说的话不是事实，或不可能发生，只是一种愿望、假设或建议等。 she looks as if she would cry和It looks as if it___ rain. look是感官动词，作系动词用，所以它后面跟的句子是表语从句。虽然as if也是虚拟语气在状语从句中的引导词，如：People treat me as if I were a dangerous person.你可以发现这句用了虚拟语气，因为主句和从句的时态是不一致的。虚拟语气的标志是主从句的时态不一致。
再问： she looks as if she would cry.那这句时态前后也不一致，是虚拟？
再答：不是，虽然前后不一致，但是这句是表语从句，有would是语气委婉。

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