动词原形通常用于不定式结构中。

The infinitive form of the verb is often used in infinitive structures.

他试图解释不定式的用法。

He tried to explain the use of the infinitive.

她喜欢在写作时使用不定式。

She likes to use the infinitive when she writes.

许多动词后面需要跟不定式。

Many verbs need to be followed by an infinitive.

不定式动词形式在英语中很常见。

The infinitive form of a verb is common in English.

不定式常常可以表达目的或意图。

The infinitive can often express purpose or intention.

在英语中，不定式通常以“to”开头。

In English, the infinitive is usually preceded by to.

要学好英语，你需要理解不定式形式。

To learn English well, you need to understand the infinitive form.

理解不定式对掌握英语语法至关重要。

Understanding the infinitive is crucial for mastering English grammar.

我们在课堂上讨论了不定式和动名词的区别。

We discussed the difference between the infinitive and the gerund in class.