一个独立的句子反映一层相对独立的意思，由这些独立的句子组成的语篇虽然也能表达一定的含义，但是整个文章会显得枯燥乏味。学会使用连接词是增加句子连贯的最主要的一个手段。

★ 表示附加信息的连接词

这类连接词有：and, also, again, too, as well as, in addition(另外，此外), besides, moreover (而且，此外), not only ... but also ..., furthermore (而且，此外), then等。如：

In the US foreign cars are often more expensive to own than American-made cars. For one thing, high tariffs (关税) on many foreign models have raised prices. Then, foreign cars often cost more to register (注册). In addition, insurance (保险) rates can be higher. Moreover, parts and repair costs are much greater than they are for American cars.

★ 表示转折和让步意义的连接词

这类连接词有：but, or, yet, on the contrary (相反), otherwise, however, even so, instead, while, although等。如：

Many ads (广告) do give important information about products; however, some of them are only meant to be humorous.

★ 表示因果和目的的连接词

常用的表示因果和目的的连接词有：for, because, consequently (所以，因此), therefore, for this purpose, as a result等。如：

Many students want to learn one or two foreign languages because they plan to find a job in joint venture (合资企业) companies after graduation.

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★ 表示例证和进一步解释的连接词

常见的连接词有：for example, as an example, in fact, for instance, such as, in other words, that is, namely, in general, especially, in particular等。如：

Many great men were born into poor families, Lincoln and Edison, for example.

★ 表示时间和顺序的连接词

常见的连接词有：at the present time, sooner or later, at the same time, to begin with, since, later, when, after, then, before, meanwhile, during, eventually等。如：

We had a hard time getting Peter out of the hole. First, we made a rope by linking our belts together. Then we lowered it down to Peter. After he had caught hold of the beltrope, we began to pull him up slowly, inch by inch, out of the hole. Finally, we could grab hold of his arms, and, with a sigh of relief (宽慰), we pulled him out onto the grassy bank. As he came up, no one dared to speak a word.

★ 表示空间的连接词

常见的连接词有：here, there, where, beyond (在……较远的一边), inside, nearby, opposite to, to the left / right, in the middle, next to等。如：

Our college is located in the middle of a big city. Inside the front gate is a bookstore. To the left of the bookstore is the administration (行政) building where many of the offices are located.Opposite the administration building is an old teaching building, and in between these two buildings is a large, attractive square with grass and trees ...

★ 表示概括总结的连接词

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常见的连接词有： in short, in conclusion, to sum up, in brief, on the whole等。如：

... In conclusion, Paris and Washington share many similarities. Besides being political and tourist centers, the cities have a similar look.