Modal verbs generally take the bare infinitive. 情态动词通常用不带to的不定式(INF)。
The teacher drilled the class in the use of the infinitive. 老师指导全班同学操练不定式(INF)的用法。
In addition, a verb Infinitive(INF) characteristics, can have their own object and adverbial form Infinitive(INF) phrase. 另外,动词不定式(INF)具有动词特点,可以有自己的宾语和状语,组成动词不定式(INF)短语。
Write three sentences, using the same infinitive phrase as a noun, an adjective and an adverb. 写出3个句子,把同一个不定式(INF)短语用作名词、形容词和副词。
However, there is a difference in meaning between agree to + - ing and agree to + infinitive. 但是agreeto+-ing和agreeto+不定式(INF)在意思上还是有区别的。