Infinitive of purpose

Use to plus a base verb to explain why someone does something.

When do we use it?

Connect an action with its purpose in simple sentences.

Form

Use to + base verb to answer why.

• I went out to buy milk.
• She called to ask a question.
• We study to learn.

Key contrast

Look for the subject, noun type, sentence form and time expression before choosing.

Common mistakes

• I went to buying milk. → I went to buy milk.
• She called for ask. → She called to ask.

Remember

Use to plus a base verb to explain why someone does something.

Quick check

• Read the complete sentence.
• Find the grammar clue.
• Choose the form that fits both meaning and structure.