（1），表选择关系或对等关系的连接词：either…or…, neither…nor…, or, as well as, and, both…and….
（2），表因果关系的连接词：therefore, so, as a result, as the result of, because of, due to, owing to, thanks to等。
（3），表时间顺序的连接词：the moment, as soon as, at first, then, later, meanwhile, at the beginning, in the end, before long, for the first time, the minute.
（4），表转折关系的连接词：yet, and yet, but, while, on the contrary, on the other hand, however, at the same time（然而）等。
（5），表解释说明的连接词：that is, that is to say, in other words, such as, for example, for instance, and so on, etc, and the like, and what not等。
（6），表递进关系的连接词：not only…but (also), what’s more, what’s worse, besides, in addition, worse still, moreover, above all等。
（7），表总结的连接词：in a word, on the whole, in short, briefly, in brief, to sum up, in all等
first,firstly, to begin with, further, in the first place
second,secondly, to start with, still, furthermore
third,thirdly, what is more, last, last but not least
also, and then, next, besides
and equally important too moreover
besides in addtion finally
by contrast although though yet
at the same time but despitethe fact that even so
in contrast nevertheless even though for all that
notwithstanding on the contarary however in spite of
on the other hand otherwise instead still
therfore consequently because of for the reason
thus hence due to owing to
so accordingly thanks to on this account since as on that account in this way
for as a result as a consequence
still nevertheless concession granted naturally
in spite of all the same of course despite
even so after all
furthermore moreover likewise what is more
besides also not only...but also...
too in addtion
<br>for example for instance for one thing that is
to illustrate as an illustration a case in point
as a matter of fact frankly speaking in this case namely
in other words
in summary in a word thus as has been said
in brief in conclusion altogether in other words
to conclude in fact finally in simpler terms
indeed in short in particular that is
in other words of course on the whole to put it differently
<br>namely in all therefore to summarize
Hey, a pet shop. Let's go in and have a look.
My friend and I want to buy a pet.
Why don't we do it after we have finished shopping?
No, I have to buy a pet before you use up all the money.
I think this way, for I had the similar experience before.
Therefore, this time I must buy things that I like first.
Ok, I'll go with you if you promise not to use up allthe money.
A cat? But we've already got one.
You have to buy the two together, because this one is that one's interpreter.
Neither he nor I like a dog.
I wonder why you think this way.
搞不懂你为何这么想。 12. 连接词whether连接名词子句，意思是是否。
I wonder whether you can help us.
13. what连接名词子句，相当于all that。
Ha, parrots! This is what I want.