Infinitive clauses of purpose

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We often use an infinitive to talk about a person's purpose.

We can also use in order to or so as to.

So as to and in order to are more common before verbs like be, have, know etc.

Before a negative infinitive, we normally use so as or in order.

Sections in this article

Infinitives
Infinitives: forms
Infinitives without to
To-infinitives
Infinitive with its own subject
For-structures after adjectives
For-structures after verbs
For-structures: other uses
Infinitive clauses of purpose
Verbs that can be followed by infinitives
Adjectives that can be followed by infinitives
Nouns that can be followed by infinitives