Grade 7 Grammar Lesson 4 Verbs: non-finite forms

The perfect participle is made by adding having before a past participle. The perfect participle represents a completed action in the past, so it often substitutes a past tense verb.

The infinitive is another form of non-finite verb. It may be a bare infinitive or a to infinitive.

The bare infinitive is used in the formation of some tenses and with modal verbs.

The to infinitive may be used as a noun (as subject or object of a verb).

Grade 7 Grammar Lesson 4 Verbs non-finite forms (3)

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