主語從句是一個(gè)重要的語法點(diǎn),主語從句是中學(xué)階段的重點(diǎn)語法項(xiàng)目,也是高考的熱點(diǎn)之一。為使同學(xué)們更好地掌握其用法,和小編一起來看一下主語從句的虛擬語氣問題吧!

it is a pity that…類句型中的主語從句用虛擬語氣

在It is a pity that...句式中,其中由that引導(dǎo)的主語從句可以陳述語氣,也可以用虛擬語氣,其區(qū)別是:用虛擬語氣(should+動(dòng)詞原形)主要強(qiáng)調(diào)驚訝之意,其感情色彩比較濃;若不特別強(qiáng)調(diào)感情色彩,則用陳述語氣。比較:

It is a pity that she failed the driving examination. 她沒通過駕駛考試真是遺憾。

It is a pity (that) she should have failed the driving examination. 她竟然沒有通過駕駛考試,真是可惜啊!

與本句型相似的還有 it is a shame that…句型:

It’s a shame that they are so wasteful. 這樣浪費(fèi)太遺憾了。

It’s a shame that they should be so wasteful. 竟然這樣浪費(fèi)真是太遺憾了。

注:連詞that的省略問題

引導(dǎo)主語從句的連詞that?有時(shí)可省,有時(shí)不能省,其原則是:若that引導(dǎo)的主語從句直接位于句首,則that不能省略;若that引導(dǎo)的主語從句位于句末,而在句首使用了形式主語it,則that可以省略:

That?you?didn't?go?to?the?talk?was?a?pity.?很遺憾你沒去聽報(bào)告。(that不可省)

It?was?a?pity?(that)?you?didn't?go?to?the?talk.?很遺憾你沒去聽報(bào)告。(that可省)