3 if引导的从句问题

If表示如果:

If you succeedeverything will be ok.

if表示对将来的设想:

If you should succeedeverything would be ok.

1.这两句有什么区别?

2.if从句和主句之间要用逗号隔开吗?

If表示对将来的设想,从句句式有sb/sth were to do+其他

3如果主语是单数,比如说he,也是用were?

4那这个句式有没有否定句和被动式呢?比如说否定句:sb/sth were not to dosb/sth were not to be done?

和被动式:sb/sth were to be donesb/sth were not to be done?

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最佳答案 2021-08-31 22:26

1.if在表虚拟的时候,对现在虚拟从句用一般过去,主句用would/should/could...+do 例如对现在虚拟:If I had any money with me, I could lend you some.

对将来虚拟从句可以用should do/过去式/were to do都可以,should do表示的可能性最大,过去式次之,were to do的可能性最小 If we should come/came/were to come tomorrow, we could meet the manager都是可以的(例句与解释来源张道真语法书,P368

如果主句用的将来时,那就不是虚拟语气,而是叫真实条件句,是真实会发生的事情,也就是主将从现if he goes there, I will go with him.(不虚拟,他去了我就一定去)

2.隔不隔开都可以?

3.是的,were to do的使用无视主语形态.

4.是的,否定就是网友所说. 

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  • Amily 提出于 2021-08-28 11:38