学英语最重要的就是培养语感，而语感不是死记硬背出来的，而是听出来的，说出来的。要想学好英语，就必须多听、多说。脸皮要厚一点，不要害怕因为说的不好而被人嘲笑。不敢开口才是真正值得嘲笑的。今天文都四六级为大家分享2020年6月大学英语四级语法考点：非真实条件句，希望对您有所帮助。

大学英语四级语法考点：非真实条件句

1)时态：可以表示过去，现在和将来的情况。它的基本特点是时态退后。

a.　 同现在事实相反的假设。

句型 ： 条件从句　　　　　主句

一般过去时　　　should( would) +动词原形

If they were here, they would help you.

b.　 表示于过去事实相反的假设。

句型： 条件从句　　　　　 主句

过去完成时　　　 should(would) have+ 过去分词

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.

含义：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.

含义： He was ill and missed many lessons, so he did not make greater progress.

c.　 表示对将来的假想

句型：　 条件从句　　　　　　 主句

一般过去时　　　　　 should+ 动词原形

were+ 不定式　　　　 would + 动词原形

should+ 动词原形

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.

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