therefore的用法：therefore作为副词，中文含义为“因此”、“所以”、“因而”，可以引出一个独立句,但不能连接两个句子,因此当therefore前没有and等连词时,前面须用分号。

therefore作为副词，意为因此;所以;因而。可以引导一个整句，也可连接两个分句。例句有：

1、He's only 17 and therefore not eligible to vote.

他只有17岁，因此没有投票选举的资格。

2、Muscle cells need lots of fuel and therefore burn lots of calories...

肌肉细胞需要很多能量，所以会燃烧大量卡路里。

3、They had seen him trawling and therefore knew that there were fish

他们曾见过他用拖网捕鱼，因此知道那里有鱼。

4、The President will therefore have to tread a very fine line when he addresses the parliament.

因此，总统在向议会演讲时将不得不仔细拿捏分寸。

5、We therefore had to contrive a very large black-out curtain.

因此我们得制作一块很大的遮光窗帘。

6、The pharaohs were considered gods and therefore immortal.

法老们被视为神灵，且长生不死。

7、It's our hope that we will play an increasingly greater role in the marketplace and, therefore, supply more jobs.

我们希望在市场中扮演越来越重要的角色，从而提供更多的就业机会。

8、The truth is that junk bonds were misnamed, and therefore misunderstood.

事实上人们对垃圾债券的称谓有误，所以产生了误解。

9、Accordingly/ Therefore, this problem should be solved by the following method.

因此，这个问题应该用以下这种方法解决。

10、He was a businessman, and therefore he always has an eye out for any opportunity to make money.

他是商人，总见钱眼开。