主题句介绍主题。

A topic sentence introduces the subject.

在支持主题句的解释、原因或细节下划线。

Underline explanations, reasons, or details that support the topic sentence.

每个段落都应该有一个主题句。

Each paragraph should have a topic sentence.

主题句是一段话的中心思想。

The topic sentence is the main idea of a paragraph.

每个段落都应该以主题句开头。

Each paragraph should start with a topic sentence.

主题句通常位于段落的开头。

The topic sentence is usually at the beginning of the paragraph.

每个段落都应该有一个清晰的主题句。

Every paragraph should have a clear topic sentence.

请确保每个小段都有明确的主题句。

Please ensure that each subparagraph has a clear topic sentence.

老师让我们写一个包含主题句的段落。

The teacher asked us to write a paragraph with a topic sentence.

一个好的主题句可以引导读者理解段落内容。

A good topic sentence can guide the reader to understand the paragraph.