為了更好地說明這個問題，我們再看幾個純英文寫作中的例子。

String of Main Clause:

In recent years computer prices have dropped, and production cost have dropped more slowly, and computer manufacturers have had to struggle, for their profits have been shrinking.

Revised:

Because production costs have dropped more slowly than prices in recent years，computer manufacturers have had to struggle with shrinking profits.

修改前的句子更像漢語的流水句（run-on sentences)，修改后用 because使句子成為主從復(fù)合句，并把兩個短句（斜體部分）變?yōu)槎陶Z，融入兩個主句，結(jié)構(gòu)更加緊湊。

并列的短句對英文來說單調(diào)乏味，如果把有些句子變?yōu)閺木?、短語或單詞，句子將更加活潑。例如：

Monotonous:

The moon is now drifting away from the earth. It moves away at the rate of about one inch a year. Our days on earth are getting longer, and they grow a thousandth of a second longer every century. A month will someday be forty- seven of our present days long, and we might eventually lose the moon altogether. Such great planetary movement rightly concerns astronomers, but it need not worry us. It will take 50 million years.

Revised:

The moon is now drifting away from the earth at the rate of one inch a year. At the rate of a thousandth of a second every century，our days on earth are getting longer. A month will someday be forty-seven of our present days long，if we don't eventually lose the moon altogether. Such great planetary movement rightly concerns astronomers, but it need not worry us. It will take 50 million years.

句子可以變?yōu)槎陶Z。

修改前：

Although production costs have declined, they are still high. Costs, which include labour and facilities, are difficult to control.

修改后：

Despite some decline, production costs are still high. Costs, including labour and facilities, are difficult to control.

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