Imperatives
Imperatives are used to tell people what to do or not to do, to make sugestions, to give advice and instructions, to encourage and offer, and to express wishes for other people.
Affirmative imperatives
– Write the whole sentence down.
– Look up its meaning in this dictionary.
– Buy this shirt.
– Mix the eggs with the butter.
– Cheer up.
– Help yourself.
– Have a good time.
Negative imperatives
– Don’t write down every word.
– Don’t stay up late.
– Don’t buy it.
– Don’t put too much sugar in.
– Don’t worry.
– Don’t ask again.
– Don’t be sad.
Have to – obligation
Affirmative obligation
S + have to
I/You/They have to…
– I have to write the exercise.
S + has to
He/She/It has to…
– He has to write the exercise.
Interrogative obligation
Do + S + have to
Do I/you/we/they have to…?
– Do you have to write the exercise?
Does + S + have to
Does he/she/it have to…?
– Does she have to write the exercise?
Negative obligation
S + don’t have to
I/You/We/They don’t have to…
– I don’t have to write the exercise.
S + doesn’t have to
He/She/It doesn’t have to…
– He doesn’t have to write the exercise.