Red lines were drawn under the topic sentences.

主题句下都画了红杠。

Especially those you are interested in the topic sentences, they must to help you a lot.

尤其是那些你感兴趣的话题的句子，它们一定对你大有帮助的。

Namely, the ability to catch the key words, the topic sentences and the drift of the articles.

即抓住要害词、主题句和中心大意的能力。

Topic sentences are one important feature of English paragraphs and play an important part in them.

主题句是英语语篇的重要特征，在语篇中起着重要作用。

As we know, topic sentences sometimes appear at the end of a paragraph. And that is exactly the case.

我们知道，主题句有时会出现在一段的末尾。本段就是一个典型的例子。