This document discusses using the infinitive form of a verb with "to" in several contexts. It can follow some verbs like "need" and "want", come after adjectives like "important" and "necessary", follow question words like "what" and "where", and can be used to indicate a purpose or reason for an action.

1. INFINITIVE WITH TO

2. • After some verbs: need, want, try, etc. (see
list on p. 158)
• After adjectives
It’s important to be polite.
It’s not necessary to wear a suit
• After what, where, when…
I don’t know what to say.
The receptionist told us where to have breakfast.
• To say why you do something
I’m learning English to find a better job.
I went to the shop to buy some milk.