三、逻辑关系词的题
在段落中将某个逻辑关系词划线问why does the author mention “逻辑关系词”?
这种题目的解法关注逻辑关系词所表述的含义如:
转折连词：however but although instead rather than 等词的出现就是表明前后相反含义
因果连词：because result in result from等词的出现就是表明前后因果关系
递进连词：furthermore  too  also  等
举个中文例子:丽丽老师很靓，但事实上，她长得很抽象。Why does the author mention但事实上?是因为前后逻辑关系相反。

例1：
The level of violence in territorial aggression varies widely from species to species, though few species fight other members of the species to death and instead rely on non-lethal contests for control of territory that involves noise-making maneuvers such as roaring.(在领土争夺过程中的暴力水平是物种之间是有区别的，尽管很少有物种把对方打死而是代替的是依赖于非致命性的方式来控制领地包括发出噪音如吼叫)
Why does the author use the word instead in paragraph 2 to show that information that follows
A contradicts what precedes it
B expands upon what precedes it
C provides an example of what precedes it
D explains an effect of what precedes it
Instead显然是一个逻辑关系词表明前后相反含义所以正确答案应该是A

例2         
Unfortunately, Hubble telescope was initially delayed in  relaying its first pictures back from space due to a simple mathematical miscalculation.
Why does the author begin paragraph 2 with Unfortunately?
A.it indicates that NASA has been unhappy with all of Hubble’s photograph.
B.It shows that NASA’s plan to use stars to orient the Hubble telescope was misguided
C.It emphasizes the need to have telescopes on Earth.
D.It indicates that high expectation were not initially met.
Unfortunately,表明了作者对Hubble 望远镜的态度。所在正确答案是D。