Imperative

1. These are imperatives:

Go. Help. Come. Wait.

We use the imperative like this:

Come in¡ Have a cup of tea.
Turn left at the post office.
Don't touch¡ It's hot.

Note that sometimes the imperative is one word, but often give more information:

Help¡
Help me¡
Help me with my suitcase.

We can say please after an imperative to be more polite:

Help me with my suitcase, please.
Hurry up, please. We're late
Come here, please.
Listen to me, please.

2. We form the negative like this:

Don't be late
Don't forget your books¡
Don't wait for me.

We normally use the short form Don't

3. We use the imperative:

---> to give instructions:

Turn right at the corner.
Don't forget your passport

---> to give warnings:

Look out! There's a car coming.
Be careful! That box is very heavy.

---> to give advice:

Have a rest. You look tired
Take a coat. It's cold today.
Don't see that film. It's terrible!

---> to ask people to do things:

Come in please, and sit down.
Listen to this song. It's wonderful.
Pass the butter, please.

---> to make offers:

Have another orange juice.
Make yourself a cup of coffee.

---> to "wish" things:

Have a good trip!
Have a nice holiday!