Warning

A warning means giving information of the danger or unexpected situation that can happen if a person does something.
A warning is usually in the form of imperative, but it may occur with the modal "must"and "should".

The Function Of Warning

1.     To admonish as to action or manners.
2.     To notify a person to go or stay away.
3.     To notify or apprise in advance. Eg. They called and warned me that they might be delayed.
4.     To notify or make someone aware of danger or harm.

There are two forms of warning, that is:

Warning in writing
Example: Written warning on a poster, bulletin board, the warning on the cigarette packs, etc.

Warnings spoken directly
Example: Spontaneously uttered as a warning to someone.

Warning can be found at:

Zoo

Laboratory

Mall

Hospital

Airport

Railway station, etc.

Way To Say It

When we are going to give warning to other people, we can use these expressions:

Informative notice:

Out of order (eg. for a machine that is not working).

No vacancies (eg. there are no more rooms to rent in a hotel, there are no jobs in an office).

Sold out (the tickets are sold out).

 Do This:

Please queue other side

Keep right

 Don’t Do This:

Keep off the grass

No smoking

No parking

No exit

Don’t lean out of the window

Please do not disturb

Please do not feed the animals

Silence. Examination is in progress

Don’t leave bags unattended.

 Watch Out:

Watch your head

Fragile (Be careful, this will break easily)

Watch your step

Beware of pickpockets

Beware of fierce dog

Watch out. The train is coming

Look out behind you.

 Advice:

Take good care of yourself

Be careful

Take care, please.

Response to the warning given by someone:

Thanks

I know, I will be careful

Thank you so much

Oh! It could hurt me. Thanks guys.

Thanks for the warning.