Question

Mood is the form a verb takes to show how it is to be regarded (e.g., as a fact, a command, a wish, an uncertainty).

There are three major moods in English:

1. The Indicative Mood. This states facts or asks questions.
2. The Imperative Mood. This expresses a command or a request.
3. The Subjunctive Mood. This shows a wish or doubt.

 

The imperative mood is a verb form which makes a command or a request. The imperative mood also occurs in sentences that express the following situations:

1. Grant or deny permission (Do not take the car out tonight.)
2. Make offers (Come to my party!)
3. Apologize (Excuse me)
4. Well-wishing (Have a good day!)

 

We usually use the second person (plural or singular) with an unspoken "you" for the subject. 

Examples:

1. Come in!
2. Shut that door.
3. Stop the bleeding.

 

The exeption to the use of the second person is when you want to include yourself in your suggestion, here we use "Let's ....".

1. Let's go to the pub.
2. Let's eat something, we are all hungry.

 

Forming Affirmative and Negative Imperatives

The imperative form of English verbs is identical to the base form (an infinitive without the p-word to functioning as the infinitive marker) of any English verb. 

The negative imperative form of English verbs is formed by the present tense form of the verb do followed by the adverb not and then the affirmative imperative form.