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need的用法你知多少

作者:opple 时间:2022-12-04 阅读:()

  2. 名词

  while作为名词:一段时间(尤指较短的时间);

  固定搭配有:take a while/for a while/ a little(short) while/quite a while/be worth sb.'s while(to do/doing sth.)/make it worth sb's while/once in a while/all the while(始终)

  拿all the while举个例子:

  He examined her thoroughly, talking softly all the while. 他给她作了彻底的检查,同时始终与她轻声交谈/细声细语地与她交谈。

  在了解while作为连词的用法之前,先介绍下连词的种类。

  连词分两种:并列连词+从属连词

  并列连词:可以连接对等的单词、短语或句子的称为并列连词。最基本的有:and, or ,but,就不一一举例了。

  从属连词:这类连词引导的从句充当状语,并且是引导从句的。比如becasue, if等

  关于如何区分使用并列连词或从属连词,我网上搜到了一个贴,比较简洁明了:

  若两个子句都是独立子句 (independent clauses),那么要使用 and, or, but, so 等对等连接词(并列连词),或者不用连接词而用正确的标点符号,即分号。若这两个子句一为独立子句、一为附属子句 (dependent or subordinate clauses),那么附属子句的前面须使用 though, because, while, when, if 等附属连接词(从属连词)。

  3. 从属连词(1),引导时间状语, 可以放在句首&句中

  当...的时候

  句首: While I was writing the letter, she was doing the dishes.

  我在写信的时候,她在洗碗。

  句中:We must work hard to gain more knowledge while we are young.

  趁着现在还年轻,我们要刻苦学习,获得更多的知识。

  4.从属连词(2),引导让步状语从句,放在句首

  尽管、虽然(比although, though语气要轻)

  e.g. While never a big eater, he did snack a lot.

  他虽然胃口从来不大,但零食确实是吃得多。

  5.从属连词(3),引导条件状语从句,句首&句中

  ”只要“,相当于as long as

  句首:While there is life, there is hope.

  有生命就有希望。

  句中:We can surely overcome these difficulties while we are united.

  只要我们团结一致,一定能克服这些困难。

  6. 从属连词(5),引导原因状语从句,句中

  “既然”,相当于since

  e.g. I'd like to get it settled today while we are at it.

  既然我们着手干了,我想今天就把它解决掉。

  7. 并列连词(1),表示转折,句中

  “而、可是、但是”,相当于wheras(用于强调两种活动、情况之间的差别)

  e.g. Motion is absolute while stagnation is relative.

  运动是绝对的,而静止是相对的。

  He went out for a walk, while I stayed at home.

  他出去散步了,而我却待在家里了。

  8. 并列连词(2),表示递进,句中

  “并且、而且”,相当于“and what is more"

  e.g. The new man-made fibres are more hardwearing than natural fibres and greatly reduce mending, while good ready-made clothes are cheap and plentiful.   新的人造纤维比天然纤维耐磨,因此能大大减少修补工作,而且做好的衣服价廉物美,数量也多。

  注:第二种最可能考,因为后一个动词不定式省略了to

not only ... but also的用法解析

  一、“not only … but also”的两种用法

  1.not only … but also应连接两个相对称的并列成分.例如:

  Not only MrLin but also his son joined the Party two years ago.(连接两主语)

  I not only play tennis but also practise shooting.(连接两个谓语动词)

  He plays not only the piano but also the violin.(连接两个宾语)

  They speak English not only in class but also in the dormitory.(两个地点状语)

  注:句子 He not only plays the piano but also the violin 不是好的文体,因为 but also 之后的成分与 not only 之后的成分不对称.

  2.not only …but also 连接两个分句,并且 not only /until位于句首时,第一个分句中的主语和谓语要部分倒装.例如:

  Not only does the sun give us light but also it gives us heat.

  Not only didhe speak English correctly,but also he speaks it fluently.

  Not only is this young man clever but also he is hard-working.

  二、如何避免使用 not only but also

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