大师作文网虚拟语气怎么用.
来源：学生作业帮 编辑：大师作文网作业帮 分类：英语作业 时间：2024/11/18 09:09:23
虚拟语气怎么用.
虚拟语气在英语语法的句法部分里面算一个难点.其主要功能体现在两方面：一是表达与事实不符合的观点态度,这是虚拟语气中最基本的用法,根据名字也可以看出来.“虚拟”就是指“不真实的,假的,与事实不符合的”,语气就是“说话的态度,观点等”,这种用法主要是用在非真实条件状语从句中. 例如：
If I were a bird,I would fly in the sky freely.(与现在事实不符合,人不可能是鸟)
If you had worked hard,you would have succeeded.（与过去事实不符合,事实是过去没好好努力）
If I became the president of the US,I would give you 100 yuan.（与将来事实不符合,洒家永远成不了米国总统~）
这里需要注意两点：1,弄清楚这三种情况下,主句跟从句的谓语动词形式（见下表）；2.注意跟真实性条件状语从句（主将从现）的区别.
时间
从句谓语形式
主句谓语形式
将来
动词过去式(be用were)
should + 动词原形
were to + 动词原形
would / should / might / could + 动词原形
现在
动词过去式(be 用 were)
would / should / might / could + 动词原形
过去
had +动词过去分词
would / should / might / could have + 动词过去分词
虚拟语气这一用法还可以用在其他的状语从句中,像目的状语,方式状语等等,这里就不一一举例子了.
虚拟语气第二点功能主要是表示“委婉”的语气,就是在表达命令,建议,要求,希望等的时候,为了委婉的表凹达,我们采用虚拟语气,这主要用在名词性从句（主语从句,宾语从句,同位语从句,表语从句）中.在这里需要记住一些特殊的词：
一坚持insist ;二命令command ,order ;三建议suggest ,advise ,propose;四请求 recommend ,demand ,require ,request（此时,谓语动词的基本结构为should+动词原形,should可以省略）.例如：The teacher suggested that we (should) finish our homework at weekends.(宾语从句) The teacher's suggestion is that we (should) finish our homework at weekends.(表语从句） We followed his advice that we should ask our teacher for help. （同位语从句）更多的例子不再举了,敲字有点麻烦.另外,在一些特殊结构中也需要用虚拟语气,再次不再赘述,先把上面最基本的虚拟语气的用法了解了,估计就能够轻松应付一般的考试了.
If I were a bird,I would fly in the sky freely.(与现在事实不符合,人不可能是鸟)
If you had worked hard,you would have succeeded.（与过去事实不符合,事实是过去没好好努力）
If I became the president of the US,I would give you 100 yuan.（与将来事实不符合,洒家永远成不了米国总统~）
这里需要注意两点：1,弄清楚这三种情况下,主句跟从句的谓语动词形式（见下表）；2.注意跟真实性条件状语从句（主将从现）的区别.
时间
从句谓语形式
主句谓语形式
将来
动词过去式(be用were)
should + 动词原形
were to + 动词原形
would / should / might / could + 动词原形
现在
动词过去式(be 用 were)
would / should / might / could + 动词原形
过去
had +动词过去分词
would / should / might / could have + 动词过去分词
虚拟语气这一用法还可以用在其他的状语从句中,像目的状语,方式状语等等,这里就不一一举例子了.
虚拟语气第二点功能主要是表示“委婉”的语气,就是在表达命令,建议,要求,希望等的时候,为了委婉的表凹达,我们采用虚拟语气,这主要用在名词性从句（主语从句,宾语从句,同位语从句,表语从句）中.在这里需要记住一些特殊的词：
一坚持insist ;二命令command ,order ;三建议suggest ,advise ,propose;四请求 recommend ,demand ,require ,request（此时,谓语动词的基本结构为should+动词原形,should可以省略）.例如：The teacher suggested that we (should) finish our homework at weekends.(宾语从句) The teacher's suggestion is that we (should) finish our homework at weekends.(表语从句） We followed his advice that we should ask our teacher for help. （同位语从句）更多的例子不再举了,敲字有点麻烦.另外,在一些特殊结构中也需要用虚拟语气,再次不再赘述,先把上面最基本的虚拟语气的用法了解了,估计就能够轻松应付一般的考试了.