雅思语法基础训练：介词和连词 (3)

2018 年 09 月 03 日来源：朗播网

摘要：雅思是一种非常注重语言能力的考试，想要雅思获得 6.5 分以上，少不了语言基础方面的训练，尤其是语法训练。小编按照语法分类给大家整理了一系列雅思语法基础训练题，并且配上详细的解析和知识点梳理，希望能给大家提供帮助。下面这篇文章就是关于英语中最常见的介词的语法题目。

## 语法题目 ## **介词和连词第3题** Although beavers rarely remain submerged for more than two minutes, they can stay underwater ____ fifteen minutes before having to surface for air. A. as long B. as long as C. so long D. so long that ## 题目解析 ## 参考答案: B 答案解析：句子主谓结构完整，空格作状语。so long that 后面连接句子，as long 和 so long 不是常用结构，选择 B，as long as 长达……。翻译：尽管海狸极少潜水超过两分钟，但是它们却能待在水下长达二十分钟才回到水面呼吸。 ## 解题思路空格前为主句，且主谓结构完整，根据句意，可判断空格及其后面的内容充当句子状语，表示「长达……」。空格后的内容是一个名词短语 fifteen minutes，所以空格出需要填入的是介词，而非连词。B 选项和 D 选项都可以表示「长达……」，但 D 选项 that 后要接句子，不符合空格后的内容，故排除，所以 B 选项为正确答案。 ## 知识点梳理 ## **介词** 介词是英语词类中的一种虚词，不能独立在句中充当句子成分。但介词与其宾语一起构成介词短语以后，就可以在句中充当多种句子成分，可以作主语、补足语、定语和状语等。介词的作用：介词是把名词与动词、形容词或另外的名词连接起来，以表示前后词语之间的关系。常见介词：at, by, for, from, in, near, of, off, on, during, since, before, after, until; inside, out of, within, without, outside, throughout; as to, until after, except for; at the cost of, at the mercy of, by means of, in place of, by favor of, in spite of, in/with reference to, in/with regard with ① I have lived here for a year. ② I'll wait for you till 10 o'clock. ③ I was familiar with nobody at the meeting. ④ Swimming is good for your health. ⑤ We can see with our eyes and write with our hands. ⑥ We succeeded by cooperating with them. ⑦ She seems to know the solution to the problem. **连词** 连词是英语词类中的一种虚词，不能独立在句中充当句子成分，但可以起连接作用，即连接词与词或句与句。连词有两类：从属连词和并列连词。从属连词都引导从句，比如状语从句、定语从句等；并列连词可以连接两个互不依从的词、短语或分句。常见从属连词：when, while, as, before, after, until, till, since, if, unless, so that, because, although 等常见并列连词：and, or, but, yet, for, either…or, both…and, not only…but also, as well as, neither…nor 等 ① When he comes I'll tell him about it. ② I wasn't long before he told us about it. ③ We danced and danced until they all joined in. ④ He was worried because he hadn't had any letter from her. ⑤ Although everyone played well, we lost the game. ⑥ We were singing and dancing all evening. ⑦ She has been learning English for six years, but she doesn't speak it very well. ⑧ The days were short, for it was now December.

以上就是小编按照英语语法知识点的分类为广大雅思考生整理的一系列雅思语法基础训练题，并且配备了超详细的题目解析和知识梳理，希望可以让大家的备考之路不再那么艰辛。

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