在大學(xué)英語(yǔ)四六級(jí)中,，單獨(dú)考察的題幾乎沒(méi)有,，但是語(yǔ)法知識(shí)點(diǎn)卻貫穿整張?jiān)嚲恚旅媸切【帪榇蠹艺淼闹R(shí),，希望可以為大家?guī)?lái)幫助,，一起來(lái)學(xué)習(xí)一下吧。
　　非真實(shí)條件句
　　時(shí)態(tài)：可以表示過(guò)去,，現(xiàn)在和將來(lái)的情況,。它的基本特點(diǎn)是時(shí)態(tài)退后。
　　a. 同現(xiàn)在事實(shí)相反的假設(shè)。
　　句型 ： 條件從句
　　主句
　　一般過(guò)去時(shí)
　　should( would) 動(dòng)詞原形
　　If they were here, they would help you.
　　b. 表示于過(guò)去事實(shí)相反的假設(shè),。
　　句型： 條件從句
　　 主句
　　過(guò)去完成時(shí)
　　should(would) have 過(guò)去分詞
　　If she had worked harder, she would have succeeded.
　　The rice would not have been burnt if you had been more careful.
　　If my lawyer had been here last Saturday, he would have prevented me from going.
　　If he had come yesterday, I should / would have told him about it.
　　含義：He did not come yesterday, so I did not tell him about it.
　　If he had not been ill and missed many classes, he would have made greater progress.
　　含義： He was ill and missed many lessons, so he did not make greater progress.
　　c. 表示對(duì)將來(lái)的假想
　　句型：條件從句
　　 主句
　　一般過(guò)去時(shí)
　　 should 動(dòng)詞原形
　　were 不定式
　　 would 動(dòng)詞原形
　　should 動(dòng)詞原形
　　If you succeeded, everything would be all right.
　　If you should succeed, everything would be all right.
　　If you were to succeed, everything would be all right.