雅思听力文本中，有一类词的作用很关键，听清楚此类词不只能快速跟上speaker的节奏避免出现漏题的情况，还能更加准确地定位正确答案。这类词叫做“信号词”。
1、顺序信号词
尤其在流程图的填空题中又或是描述实验步骤的独白中出现。
Before I move on to ...
Next, I’d like to ...
Right, so the first thing ...
And what about...?
One more thing
for one thing… for the other…
Finally, can you tell us...
last but not least
2、强调信号词
强调信号词有助于同学们对某一细节事实加深理解和认识，通常它后跟的就是考点。若是对这些词不是很敏感，答案往往就溜走了。而这些词之间会进行同义替换需注意甄别。
That is to say, I mean, namely
in particular, especially,
to be exact,
Let’s put it this way
3、并列或转折信号词
这类信号词可以说是逢考必出现，而且出现不止一次，所以要求同学们熟练掌握。当听到表示转折的词或短语时，考生一定要集中注意力，因为此时speaker会提供新信息或完全相反的观点也就是考点所在。
4、并列信号词：
and， not only…but also…, also
转折：
but, actually, well although, even if, whereas, by/in contrast, by comparison, instead, otherwise
Eg.
Most people tend to book twenty-four hours in advance…however, the earliest you book a computer is forty-eight hours before you need it.
题目：Computer can be booked up to ___hours in advance.
如果注意到however一词，可知正确答案应为48小时。
5、列举信号词
顾名思义列举信号词是细节描述最常见的信号词，是对于同类事物的列举又或是针对上文的补充。也就是说出现这类词，一定是细节类的内容，比如例子等。若未听清其前面的内容，也可根据这类信号词推断前文。
for instance, for example, such as, like
in addition to, what’s more , furthermore, besides |
