Unity 7 What`s this for?

Verb ''Used to''

We use the modal verb "used to" to indicate something that happened or happened in the past in a habitual way. Also, it is used for something that was once true but is no longer true. As with the other modal verbs, "used to" is followed by the base form of the verb (the infinitive without "to").

Examples: What are these items used for.

I usually use my phone to talk with my boyfriend and my best friend.

Infinitives
I use my computer to send e-mails.
Computers are often to pay bills.

Gerunds
I use my computer for sending e-mails.
Computers are often used for paying bills.