Verbs

Infinitive

Infinitive without to

Use the infinitive after let's... and why don't we... to make suggestions.

Let's	go to the beach.
Why don't we Shall we	call Rita?

Infinitive with to

Some verbs are usually followed by the infinitive (with to).The action of the verb in the infinitive is usually later in time than the first verb. These include decided, hope, learn, plan, refuse and want.

He planned to go to China but decided to learn Chinese first.

Infinitive of purpose, so that

To say why a person does something, use to + verb.

A: Why did you go to the store?
B: To get some food.

You can also use so that + subject + modal verb.

I went to the store so (that) I could get some food.