四六级

　　进入暑假状态的同学们都有什么安排与计划呢？有没有为学习英语留出一些时间？尤其是语法知识相对薄弱的同学，暑假正是恶补的最好时期。从今天开始小编每天为大家整理一些英语四级语法基础知识，希望大家认真复习。

        2017年12月英语四级基础语法知识大全

　　表原因关系

　　1) for

　　判断改错：

　　(错) For he is ill, he is absent today.

　　(对) He is absent today, for he is ill.

　　for是并列连词，不能置于含两个并列分句的句子的句首，只能将其放在两个分句中间。

　　2) so, therefore

　　He hurt his leg, so he couldn't play in the game.

　　注意：

　　a. 两个并列连词不能连用，但therefore, then, yet.可以和并列连词连用。

　　You can watch TV, and or you can go to bed.

　　He hurt his leg, and so / and therefore he couldn't play in the game.

　　b. although… yet…，但although不与 but连用。

　　(错)　Although he was weak, but he tried his best to do the work..

　　(对)　Although he was weak, yet he tried his best to do the work.

　　表示转折或对比

　　1) but表示转折，while表示对比。

　　Some people love cats, while others hate them.

　　典型例题

　　--- Would you like to come to dinner tonight?

　　--- I'd like to, ___ I'm too busy.

　　A. and　 B. so　 C. as　 D. but

　　答案D。but与前面形成转折，符合语意。而表并列的and， 结果的so，原因的as都不符合句意。

　　2) not…but… 意思为"不是……而是……"

　　not 和but 后面的用词要遵循一致原则。

　　They were not the bones of an animal, but (the bones) of a human being.

　　希望以上内容可以帮助到对于英语语法有困惑的同学，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!

      编辑推荐