1转折

but, however, yet,in fact, on the other hand;

2让步

(1)although：although A, B

尽管有A，B还是出现了(A，B互不影响)若A是正，那B就是负的。

(2)while：五个含义：

A. although：虽然，尽管

B. as long as：只要

C. whereas, but：表转折

D. when：当。。。的时候

E. n. 表一段时间

3并列A and B

A和B两个属于并列

4递进：没有转折的意思，后项承接上文

A furthermore B

A moreover B

A besides B

5顺序或过程

(1) first, then,next, later on, finally

(2) 1st, 2nd, 3rd…

(3) in the firstplace, in the second place…

(4) before…, after…

(5) once, until, assoon as,…

6比较级：类比、对比

(1) as…as, like 类比

(2) more…than, unlike对比

7例如：A forexamper =B

A是理论，B是解释

8因果关系

(1) 明显因果关系/分句间因果关系(即：原因、结果是两句话)

because, as, since,for, so(that), therefore, thus, hence, as a result

(2) 微妙因果关系/句内因果关系(在一句话中，通过v.来表达)

例如：Increased airtemperature brought about higher sea levels.

Cause, lead to,result in/ from, contribute to, pose, help, create, affect, influence,attribute to.

Attribute A to B, 把A归因于B (因为B所以A)