四六级

　　语法与词汇是英语学习的基础，坚实的语法是英语水平进阶的充分必要条件，英语六级考试中的各种题型都要求我们掌握一定的语法知识，比如解读长难句，句子中的单词都认识，但是却不明白句子的含义，这个时候，你就应该意识到，你差的不是词汇量，而是语法知识。本文为大家介绍非真实条件句。

　　英语六级语法知识：非真实条件句

　　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.

　　以上就是小编为大家介绍的相关信息，希望对大家有帮助。想了解更多四六级备考课程、备考资讯，请点击文都网校四六级资讯站查询!有问题找文都☞☞☞详情咨询入口>>>

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