下面小编跟大家一起了解托福逻辑关系总结讲解分享，希望对大家的学习有所帮助。
逻辑关系
(1)否定关系 ：
--no, not, none, neither, never, deny 等隐含的否定关系特色词汇
-- fail to, absence from, lack(of), refuse to, little, few
【否定前缀】
常用否定的前缀主要有：
a-[asexual 无性别的]
ab-[abnormal 非正常的]
anti-[antisocial 与社会对立的]
counter-[counterrevolution ]
de-[decontrol 解除管理, 解除管制]
dis- il- im- in- ir- mal- mis- non- un-...
例句：
In fact, he was so quiet that his parents thought he was not normal.
In fact, he was so quiet that his parents thought he was abnormal.
【否定后缀】
需注意的三个否定后缀：
-less、-free、-proof
hatless: not wearing a hat
salt-free: without salt
a bulletproof car: a car designed not to be harmed by bullets
(2): 因果
【显性】
because(of), since, for, as, due to, owing to, In that, so(that), therefore, thus, hence,as a result,consequently...
【隐性】
1、表示“导致”的词
cause, lead to, make，render, stimulate, spur, spark, push, motivate, prompt, be responsible to
2、表示“由…而来”的词
derive from, result from, come from, originate from, initiate from,His illness resulted from bad food.
(3):比较与条件
【比较结构--隐藏】
1.自身含有高级含义的词；
maximum, favorite, outstanding, top...
E.g. The maximum speed of this car is 150 miles per hour.
2.比较级表示高级
I've never heard a better voice.
China is larger than any of the other countries in Asia.
George did more work than anyone elseI like nothing better than swimming.

【条件】
表示条件概念的词:
if, unless, supposing (that), suppose (that), providing / provided (that), in case, aslong as, oncondition that
1) In case the house burns down, we’ll get the insurance money.
2) You can go out, as long as you promise to be back before 11 o’clock.
3) You can borrow the book, on condition that you don’t lend it to anyone else.
(4)--并列与转折
【 表示并列关系】
likewise,in (much) the same way,similarly/similar to,vice versa,also/as well as,not only … but also …,both … and …, neither … nor …, like/just like, equally,or/and
【表示转折关系】
but/yet, however, in contrast (to), conversely, though/although, nevertheless, inspite of/despite, onthe contrary, even if/even though, instead (of), different from/differ from, while