|Imperatives are sentences that ask somebody to do something, give advice,give orders, encourage and to express well-wishes. The obvious subject in an imperative sentence is 'you', so there is no need to write it in the sentence. Some examples are: Sit down, take some rest, keep trying and get well soon. Putting emphasis can be expressed by adding 'do' at the beginning of a sentence such as: do take some rest, o pass your work, etc.|
Just like any other sentences, imperatives can also be in a negative form. This is done by using 'do not'. The following sentences are good examples: Don't be late. Don't forget, Don't let me down.
Imperative sentences can also be used to refer to oneself plus somebody. In the following sentences: Let us go to work. Let us begin, Let us eat, the subject is not just 'you' but also the person speaking. This is formed this way: let us + verb as in: Let us see her, Let us welcome our guest speaker, etc. To form the negative of let us, we add the word ' not' like in the following sentences: Let us not for get what we have been told to do' Let us not let this unacceptable behavior spoil our day.