复数： infinitives

Used alone to avoid repetition of the whole infinitive .

以避免重复整个动词不定式。

Exercise vi replace the adverb clauses by infinitive phrases .

用不定式短语来替换下列句中状语从句。

I can use the infinitive form .

我能使用动词不定式.

Comloete the following sentences with an infinitive or a gerund .

根据句意,用动词不定式或动名词完成下列各句.

Used in progressive tenses with the infinitive .

用在带动词不定式的进行时态中。