非谓语动词是英语语法中的重要组成部分，主要包括不定式、动名词和分词（包括现在分词和过去分词）。以下是几个非谓语动词的例句：

不定式

To be or not to be, that is the question.

I want this letter to be opened now.

I am to tell a story.

动名词

Walking in the park, I saw a beautiful butterfly.

He enjoys playing basketball.

Reading books is my favorite hobby.

现在分词

He is reading a book.

When he realized his mistake, he immediately apologized.

Volunteering gives you a chance to change lives, including your own.

过去分词

The book written by him is very popular.

With the government's aid, those affected by the earthquake have moved to the new settlements.

The work done by him is very good.

这些例句展示了非谓语动词在不同句子结构中的多种用法，包括作主语、宾语、表语、定语和状语等。希望这些例句能帮助你更好地理解和运用非谓语动词。