if条件句中的从句里可以有现在完成时吗, 1.我记得有现在完成时只能是if引导的虚拟语气中主句用现

2025-01-09 05:02:30
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虚拟语气 if 条件句。 如果主句是过去时从句用什么时态? 再如果主句是现在完成时,从句用什么时态

2015-07-04 | 分享

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满意回答

if后面接的句子叫从句,如果从句过去时,主句用would have done 。如果从句表示将来,主句用would do 。如果从句表示现在,主句还用would do

陌浅念丶 | 2015-07-04

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推荐回答

所谓虚拟语气就是退后一步说,也就是说把时态退后的说话以前。如果是描述将来的真实语气,主从句的时态应该分别如下
〔主句〕将来时
〔从句〕现在时
如果改用虚拟语气,主从句的时态要推后的前一个时态:
〔主句〕推后到 “过去将来”,也就是 would do
〔从句〕推后到 “过去” ,也就是动词过去式。
【例如】 
〔真实语气〕I (will pay) a visit to him if he (comes) tomorrow. 含义是 “他明天可能要来,如果来了,我会去拜访他的”
〔虚拟语气〕I (would pay) a visit to him if he (came) tomorrow. 含义是 “退一步说,要是明天他果真要来的话,我就去拜访他,可惜他不可能来”。

主句是现在时属于真实语气,从句当然也是现在时,例如 I am sure to pay a visit to him if he comes tomorrow.

张达人zhdr | 2015-07-04

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相关问题

if 从句用过去时,主句用什么时态?(真实条件句,不是虚拟语气)10

时间状语从句主句现在完成时从句什么时态49

宾语从句的主句如果不是一般现在时 过去时 从句应该用什么时态?例如主句是现在完成时从句用什么时态?谢谢14

虚拟语气,主句和从句的时态是用什么时态?为什么10

是不是since引导的从句无论是什么时态主句都用现在完成时59

主句是现在完成时,从句用什么时态19

请分别解释以下、从句、主句在虚拟语气中的时态4

更多相关问题>> 用作业帮一键提问“if从句...”的问题

其他回答

had done 
Ved

Mr0__ | 2015-07-04

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主将从现?

糊涂的王小姐 | 2015-07-04

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为您推荐

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现在完成时和过去时的区别354

现在完成时和一般过去时的区别306

现在完成时的时间状语及其用法285

现在完成时用法282

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