情态动词有许多功能。

Modal verbs have many functions.

你应该学习如何使用情态动词。

You should learn how to use a modal verb.

你能给我一个情态动词的例子吗？

Can you give me an example of a modal verb?

情态动词可以用来表达可能性。

A modal verb can be used to express possibility.

在英语中，“can（能）”是一个常见的情态动词。

In English, can is a common modal verb.

情态动词通常用于表示能力或许可。

A modal verb is often used to indicate ability or permission.

是情态动词吗?。

What is modal verb?

是一个情态动词。

Can is a modal verb.

学习和练习情态动词的用法，包括主要情态动词的基本用法。

Goal: Learn to use the Modal Verbs by doing some exercises.

英语情态动词现在时态的语义和用法十分复杂。

The semantics and the use of the English modal verb in the present tense are very complicated.