英语水平要提升，光背会单词还不行，还要掌握语法知识。基础复习阶段，遇到的相关语法问题一定要弄懂弄会。下面我们继续一起来学习介词语法知识点。

　　二、介词分类

　　(一)简单介词

　　介词由一个单词构成，常见的有：

　　aboutaboveacross

　　afteragainstalong

　　among(a)roundas

　　atbeforebehind

　　belowbeneathbeside(s)

　　betweenbeyond but

　　byconsidering(考虑到) concerning(关于)

　　despite(尽管，任凭) downduring

　　except for from

　　in insideinto

　　including likenear

　　of offon

　　opposite outsideover

　　past regarding(关于)since

　　through tillthroughout

　　to toward(s)under

　　upwithwithin

　　without

　　例句： Studies of both animals and humans have shown that sex hormones somehow affect the stress response: causing females under stress to produce more of the trigger chemicals than do males under the same conditions. (选自2008年Text 1)

　　分析：该句是复合句，主干部分为studies...have shown that...。分词causing...作状语表示伴随，其逻辑主语是sex hormones。

　　译文：对人和动物的研究已经表明性激素荷尔蒙以某种方式会影响对压力的反应;结果造 成在同等条件下，妇女处于压力下会比男人产生更多的诱发性的化学物质。

　　例句： Of course, the image of parenthood that celebrity magazines like Us Weekly and People present is hugely unrealistic, especially when the parents are single mothers like Bullock. (选自2011年Text 4)

　　分析： 该句是复合句。that celebrity magazines like Us Weekly and People present是一个定语从句，修饰image of parenthood，介词短语like Us Weekly and People作后置定语，修饰celebrity magazines。

　　译文：当然，《我们周刊》、《人物》等名人杂志中呈现出来的父母形象非常不切实际，尤其当母亲是布洛克这样的单亲妈妈时更是如此。

　　(二)成语介词

　　成语介词由两个或两个以上的单词构成。

　　如：

　　according toahead ofalong with

　　apart fromas foras to

　　because ofdue toexcept for

　　in view ofirrespective of(无论)out of

　　previous toprior tothanks to

　　together withup toby means of

　　by way offor the sake ofin the event of

　　in front ofinstead ofon the point of

　　on account ofowing towith a view to(为了)

　　with regard toas well asin addition to

　　other thanapart from

　　例句： He must store a large quantity of grain instead of consuming all his grain immediately. (选自2000年Cloze Test)

　　分析： 该句是简单句。

　　译文：他必须储存大量的粮食，而不是马上将其全部消耗掉。

　　例句： Corporations and labor unions have conferred great benefits upon their employees and members as well as upon the general public. (1999年第37题)

　　分析： 该句是简单句。

　　译文：公司和工会为公司员工、工会成员和广大公众都带来了极大的利益。