进行时为什么I的后面接was不是were

1虚拟语气中只有were ,没有was

第三人称单数也用were

在假设的前提条件下,不论哪种时态都用were

2一般用would should might could 也就够了

区别见下面

would表示将会怎么样或将要怎么样比用will更委婉、客气

例：1Would you like another cake

2I would like to go there by car

should表示应该怎样或将应该怎样比用shall更委婉、客气

例：

1You should go to school by yourself when you're bigger

2We should go there now

must表示应该怎样、必须怎样,就是本身的行为的进行不要考虑客观因素

例：1You must listen to the teacher what he says

2We must go there wheather it's rainning

might表示也许可能,一种猜测或未定性的活动

例：

1He might have been there

2We might get there laterly

3were to do和should do都可用在表示对将来情况的虚拟,没有太大区别should do 还可以用在其他的虚拟语气句式里,比如说suggest +that从句,insist+that从句,等等

I was和I were都对。

be动词，意思和用法很多，一般的意思是：是，此种用法，有多种变化形式，am, is, are，was，were，being，been。一般过去时和过去进行时中，第一人称单数和第三人称的单数形式，则用was。第一人称复数和第二人称复数、第三人称的复数，则用were。第二人称单数也用were。

语句的时态：

1、如果是一般过去时，就用was/were

2、如果是一般现在时，就用am/is/are

3、如果是一般将来时，就用will be

4、如果是现在完成时，就用have/has been

5、如果是现在进行时：am/is/are+being+done

6、如果是过去进行时：was/were+being+done

7、如果是过去完成时，就用had been

相应的谓语东西都是对应的，例如:

I am——I was;

you(we、they) are——you(we、they) were;

she(he、it) is——she(he、it) was。

It is (high) time that后面的从句谓语动词要用过去式或用should加动词原形，但should不可省略。

It is time that the children went to bed

It is high time that the children should go to bed

it's high time that sb did sth

多用在虚拟语气中,是时候某人该做某事了,并不表示过去时态

表示“是该做得时候了”

你所提到的用were还是was，要看主语而定

was和were的区别及用法：

1、was和were都是过去时。was是is和am的一般过去式，were是are的一般过去式。

2、was与I/He/She/It连用，were与We/They/You连用

was

1、Right off I want to confess that I was wrong 

我立刻就想承认我错了。

2、He was already rich 

他已经很富有了。

3、After about three months, I was no longer addicted to nicotine

大约3个月后，我就不再对尼古丁上瘾了。

4、I was astounded by its beauty

它的美丽震撼了我。

were

1、He believes in atheism as though it were a new religion 

他信奉无神论就像信仰一种新的宗教。

2、They were photographed and had their fingerprints taken

他们被拍了照，还被提取了指纹。

3、We were all badly bitten by mosquitoes

我们都被蚊子咬惨了。

4、Several people were treated for broken bones

数人接受了断骨治疗。

主谓一致中当主语是单数时（人称代词是I，he, she, it)一般用was，如

I was about to finish the task in two days

He was reading a book when I came in

当人称代词是复数时（you，we，they），谓语动词用were，如

They were playing basketball on the playground

但是也有例外，在虚拟语气中间都要用were不用was

If I were you, I would leave him

这个是虚拟语气的用法,

were式虚拟 英语中叫做“were式虚拟”的这种虚拟语气,通过扭曲时态形式来表示与实际情况相反的虚构假设具体做法是将时态的形式“倒推一个时态”这样的表述也许不太准确,但是非常实用,也极容易理解具体的做法,就是将现在时态变成过去时态,将过去时态变成“过去的过去”在这种虚拟语气的用法中,动词be至少要倒退一个时态成为“过去时态”的were（在虚拟语气中一般不用was、is、am、are,倒推一个时态以后都写成were）因此,这种表示与实际情况相反的虚构假设的虚拟语气就以动词be的变化为例,叫做were式虚拟

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