托福阅读逻辑关系是怎样引导的呢?考过托福阅读的同学可以发现虽然托福阅读文章篇幅长，介绍的内容也很多，但从没有一种散乱的感觉，的确，因为不管是托福还是其他的考试，文章中都会存在各种逻辑关系，下面就来介绍一下。

　　托福阅读文章逻辑关系种：因果关系

　　因：because, because of, for, as, since, in that, on account of,with

　　果：so, so that, therefore, thereby, as a result, hence, thus,consequently, accordingly　　因果关系除了传统意义上的显性因果表达词外，隐性的因果同样是不可忽略的一个重要部分。

　　隐性因果：

　　A 导致(因-果)：cause, reason, lead to, give rise to, result in, render, make, let, ask, support,push, stimulate, spark, spur, fuel, produce, be responsible for

　　如The increased pressures of expanding populations have led to the removal of woody plants sothat many cities and towns are surrounded by large areas completely lacking in trees and shrubs.

　　在这段话中，有lead to, 表示了导致的意思，即结果; 而so that 更进一步表示了后面的结果，所以可以充分判定这段话有因果关系的逻辑。

　　B 由…而来(果-因)：result from, derive from, originate from, initiate from, stem from, beresponsive to, be attributable to

　　如 “The extreme seriousness of desertification results from the vast areas of land and tremendousnumbers of people affected, as well as from the great difficulty of reversing or even slowing theprocess.”

　　在这段话中，根据result from可以推断出有因果关系，那如果是解释句子题时，选项中有因果关系就可以优先考虑。

　　C 反映，体现(果-因): reflect, present, demonstrate, suggest, imply, show

　　This result demonstrates that…

　　D 考虑到: given, considering, in view of, thanks to, according to　He succeeded thanks to (in view of) his effort.

　　E 依赖于: rely on, depend on, resort to,　He resorted to books when he had problems.

　　F 条件关系：when, once, as soon as, as long as

　　As soon as he got the money, he would leave the country at once.

　　G 分词短语，不定式做状语　　Failing in the final exam, she cried.

　　托福阅读文章逻辑关系第二种：对比转折关系

　　A 对比：while, whereas, on the other hand

　　在解释句子题，插入句子题中，一旦出现对比关系，学生在掌握的基础上就能非常快速的判定句间和句内的关系。While, whereas 前后连接的是平行结构，on the other hand前必定有on one hand, 可以用来把握句间关系。

　　B 转折：but, although, despite, in spite of, nevertheless, however

　　托福阅读文章逻辑关系第三种：比较关系

　　A 同级比较 as…as

　　B 比较级：more…than, -er than, less…than

　　C 变化：change, alter, vary, modify, revise, increase, decrease, enhance, diminish, develop, advance, improve, retreat, degenerate, continue, remain

　　D 差异：different, distinguish, separate, same, similar, comparable, compare…to

　　E 超越：surpass, exceed, excel, over

　　No one is more outstanding than him.

　　托福阅读文章逻辑关系第四种：否定关系　　显性否定：no, not, never, nor, none neither

　　隐形否定：fail to, refuse, remove, miss, reject, absence of, lack of

　　否定前缀：a-, ab-, dis-, il-, im-, in-, non- , un-

　　否定前缀是词汇题中经常出的一个考点，把握否定前缀可以帮助考生把握一些生词，依靠否定前缀对选项进行一个排除。

　　双重否定托福阅读词汇：not fail to, not illegal, not uncommon, not unavailable

　　双重否定是英文中经常运用的表达方式，由于在平时中文对话中用的很少，随意对双重否定的把握就显得特别的重要。

　　可以看出不同的逻辑关系有着不同的托福阅读词汇出现，大家如果能把握住这些关系相信对于理解托福阅读文章会非常有帮助。

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