為了方便考生更好的復(fù)習(xí)特整理了GCT英語語法：虛擬語氣，供大家參考：

　　一 、通過動(dòng)詞形態(tài)的變化

　　與現(xiàn)在相反：從句一般過去時(shí)–主句would/should+動(dòng)詞原形

　　與過去相反：從句過去完成時(shí)–主句would/should + have+ 過去分詞

　　與將來相反：從句were + 不定式–主句would/should+動(dòng)詞原形

　　二、should+動(dòng)詞原形

　　1、It is +important/ necessary/ possible/ ridiculous/ urgent/ vital/ proposed等形容詞+ that從句, e.g.:

　　It’s necessary that we (should) set out at once.

　　2、表示”提議、建議、請求、命令”(suggest/ insist/ command/demand/intend/order/ propose)等意思的動(dòng)詞所帶的從句, e.g.

　　I suggest that he (should) go camping tomorrow.

　　3、在lest, for fear that, in case等詞引導(dǎo)的從句中，謂語部分用should+動(dòng)詞原形。e.g.:

　　Grown people should never say or do anything wrong before children, lest they (should) set them a bad example.

　　三、謂語動(dòng)詞提前一個(gè)時(shí)態(tài)(在原來時(shí)態(tài)的基礎(chǔ)上再”過去”一下)

　　1.wish后的賓語從句，e.g.:

　　I wish I had been to the concert last night.

　　I would (had) rather后的句子

　　I’d rather he hadn’t done anything like that.

　　四、謂語動(dòng)詞用一般過去時(shí)

　　It’s (high, about) time that…, e.g.:

　　It’s high time that he stopped smoking.

　　五、由as if，as though引導(dǎo)的從句中，表示對現(xiàn)在的懷疑：用一般過去時(shí)

　　對過去的懷疑：用過去完成時(shí) e.g.:

　　She looks as if she knew all about it.

　　if only引導(dǎo)的感嘆句中，表示與現(xiàn)在相反：用一般過去時(shí)

　　表示與過去相反：用過去完成時(shí) e.g.:

　　If only he knew our telephone number!