主語從句中的虛擬語氣問題(一)
主語從句是一個重要的語法點,主語從句是中學階段的重點語法項目,也是高考的熱點之一。為使同學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 important that…類句型中的主語從句用虛擬語氣
在It is important that...句式中,其中由that引導的主語從句通常用“should+動詞原形”這樣的虛擬語氣,其中的should在美國英語中通常省略。如:
It’s important that we (should) reply to her letter. 回覆她的信是重要的。
It is important that we should speah politely. 我們説話要有禮貌,這是很重要的。
與本句型相似的還有以下句型:
1. it is necessary that…句型:
It is necessary that I should return it this morning. 今天早上我就有必要還回去。
It is not necessary that everyone be a scientist. 沒有必要使每一個人都成為科學家。
2. it is impossible that…句型:
It is impossible that he should go home. 他不可能會回家去。
3. it is essential that…句型:
It is essential that the meeting start at eight. 會議務必在8點鐘開始
It is essential that we should tell her the news. 我們有必要告訴她這個消息。
4. it is desirable that…句型:
It is desirable that everything should be ready by five o’clock. 最好一切在5點前準備就緒。
It is desirable that there should be a cold season once a year. 每年有一個寒冷的季節,是很令人盼望的。
5. it is advisable that…句型:
It is advisable that everyone should have a map. 最好每一個人都有一張地圖。
It is advisable that he should see a dentist regularly. 他定期去看牙科醫生是明智的。