3 sentences

1. 这个段落起到了承上的作用。

   zhè​ge duàn​luò qǐ​dào le chéng shàng de zuò​yòng.

   This paragraph serves to connect with the preceding part of the text.

   Source: Dong Chinese Dictionary

2. 他在书的重要段落旁做了标记。

   tā zài shū de zhòng​yào duàn​luò páng zuò le biāo​jì.

   He made marks next to the important passages in the book.

   Source: Dong Chinese Dictionary

3. 段落的最后一定要记得加上句号。

   duàn​luò de zuì​hòu yī​dìng yào jì​de jiā​shàng jù​hào.

   Remember to add a period at the end of the paragraph.

   Source: Dong Chinese Dictionary