在工作或?qū)W習(xí)中，我們常會(huì)使用到英語(yǔ)否定疑問(wèn)句，那么什么是否定疑問(wèn)句？該如何使用呢？

下面一起來(lái)學(xué)習(xí)下名詞性從句的用法及定義吧：

1.It’s the first time that……….(從句中用現(xiàn)在完成時(shí))

It was for the first time that………(強(qiáng)調(diào)句，對(duì)狀語(yǔ)for the first time進(jìn)行強(qiáng)調(diào))

It’s (high) time that……..(從句中用過(guò)去時(shí)或should do)

2.It’s the same with sb. / So it is with sb.

表示某人也如此(用于前句中既有肯定又有否定或兩個(gè)不同類(lèi)的謂語(yǔ)動(dòng)詞)

3. …be about to do / be doing……when…….正要做/正在做……就在那時(shí)…….

4.A is twice / three times as +原級(jí)+as B A是B的兩倍/三倍

A is twice / three times the n. of B. A的…是B的兩倍/三倍

A is twice / three times +比較級(jí)+than B A比B多兩倍/三倍

5.It’s a waste of time / money doing / to do…做……浪費(fèi)時(shí)間/金錢(qián)

It’s no use / good doing……… 做……是沒(méi)有用的

It’s possible / probable / (un) likely that………. 很可能……

It makes great / no sense to do……做某事很有/沒(méi)意義

6.There’s no use / good doing……. 做……沒(méi)有用

There’s no sense / point (in) doing…… 做……沒(méi)有意義

There is no need for sth. / to do……. 沒(méi)有過(guò)必要做……

There is (no) possibility that…………(同位語(yǔ)從句)很可能/沒(méi)可能……

7.The+比較級(jí)……..,the+比較級(jí)………越…….., 越…….

注意：前半句為從句，用一般現(xiàn)在時(shí)代替將來(lái)時(shí);

8.It seems / appears ( to sb. ) that sb…….在某人看來(lái)某人……

= / appears to be / to do / to be doing / to have done……..

It seems / looks as if……….好象/似乎……..

9.It (so)happened that sb. ……..某人碰巧……..

= Sb. happened to be / to do / to be doing /to have done…..

10.It is said / thought / believed / hoped / supposed …….that sb………

=Sb. is said to be / to do / to be doing / to have done……….

(注意：這種句型里如帶動(dòng)詞hope則不能變成簡(jiǎn)單句，因?yàn)闊o(wú)hopesb. to do結(jié)構(gòu))

11.It is/ has been +一段時(shí)間+since從句(從句中如為延續(xù)性動(dòng)詞,則實(shí)際表示的意思相反)

Eg:It is two years since he drank.他不喝酒已兩年了.

12.…….such…….that…….如此…….以致于(引導(dǎo)結(jié)果狀語(yǔ)從句)

…….such……..as……像……..的這種……(as為關(guān)系代詞，引導(dǎo)定語(yǔ)從句，在從句里充當(dāng)主、賓、表)

13. Do you mind if I do sth.? / Would you mind if I did sth.? 你介意我做……嗎?

14.The chance is that……../ (The) Chances are that……….很可能…….

15.Check/ Make sure / See to it / See that……..(從句中常用一般現(xiàn)在時(shí)) 確信/務(wù)必……..

on it that……..取決于

see to it that…….負(fù)責(zé)/設(shè)法做到…….

注意：除了except / but / in等介詞可以直接接that從句，其它介詞后必須用it做形式賓語(yǔ);

17.It is/ was +介詞短語(yǔ)/ 從句/ 名詞/代詞等+that………

How /When / Where / Why is / was it that………..?

注意：此句型為強(qiáng)調(diào)句，當(dāng)被強(qiáng)調(diào)的為表示人的詞時(shí)，還可用who連接;強(qiáng)調(diào)主語(yǔ)時(shí)，從句后的謂語(yǔ)動(dòng)詞應(yīng)與前面的主語(yǔ)保持一致;注意與定語(yǔ)從句的區(qū)別)