一.虛擬語氣

虛擬語氣表示說話人的主觀愿望、猜疑、建議或與事實不符的假設等,而不表示客觀存在的事實。虛擬語氣是由句中的謂語動詞的特殊形式表示出來的。

北京体彩网虛擬語氣主要分為與現在事實相反,與過去事實相反以及與將來事實相反三個種類。讓我們一一來看下它們的結構和用法吧!

北京体彩网1、表示與現在事實相反的情況

北京体彩网從句:If+主語+動詞一般過去時(Be動詞用were)

主句:主語+ should/would/might/could+do:

If I were you,I would take an umbrella.
如果我是你,我會帶把傘。(事實:我不可能是你)

If I knew his telephone number,I would tell you.
如果我知道他的電話號碼,我就會告訴你。(事實:不知道)

If there were no air or water,there would be no living things on the earth.
如果沒有水和空氣,地球上就不會有生物。(事實:地球上既有空氣也有水)

If I had any money with me,I could lend you some.
如果我帶錢了,我就會借給你些。(事實:沒有帶錢)

If he studied harder,he might pass the exam.
如果他再努力些,就能通過考試了。(事實:沒有努力)

If I were you, I'd wear a shirt and tie.
如果我是你,我就會穿襯衫和領帶。(事實:我并不是你)

2、表示與過去事實相反的情況

從句:If+主語+had+done

北京体彩网主句:主語+should/would/might/could+have done

eg:If I had got there earlier,I should/would have met her.
如果我早到那兒,我就會見到她。(事實:去晚了)

If he had taken my advice,he would not have made such a mistake.
如果他聽我的勸告的話,就不會犯這樣的錯誤了。
(事實:沒有聽我的話)

3、表示與將來事實相反

從句:①if+主語+were to do

北京体彩网②if+主語+should+do

③if+主語+動詞一般過去式(be動詞用were)

主句:主語+should/would/might/could+do

eg:If he should come here tomorrow,I would talk to him.
如果他明天來這兒的話,我就跟他談談。(事實:來的可能性很小,不可能)

If there were a heavy snow next Sunday,we would go skating.
如果下周日下大雪,我們就去滑冰。(事實:下雪可能性很小,不可能)

If she were to be here next Monday,I would tell her about the matter.
如果她下周一來這兒的話,我就會告訴她這件事的始末。(事實:來的可能性很小,不可能)

北京体彩网除了以上三種主要情況,虛擬語氣還有以下幾種結構和用法哦。

北京体彩网1、 當從句的謂語動詞含有were,should,had時,if可以省略,這時從句要用倒裝語序,即把were,should,had等詞置于句首,這種多用于書面語。

eg:Should he agree to go there,we would send him there.
要是他答應去的話,我們就派他去了。

Were she here,she would agree with us.
如果她在這兒的話,她會同意我們的。

Had he learnt about computers,we would have hired him to work here.
如果他懂一些電腦知識的話,我們已經聘用他來這里工作了。

2、非真實條件句中的條件從句有時不表達出來,只暗含在副詞、介詞短語、上下文或其他方式表示出來,這種句子叫做含蓄