English Grammar What is an imperative sentence? Structure? Usage?

Imperative sentences

Imperative sentences express requests, commands, suggestions, etc. The predicate verb always uses the base form. Usually there is no subject in the sentence, and an exclamation point or period is used at the end of the sentence, with a falling intonation.

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1Imperative sentences containing second-person subjects

Be careful! Be careful!

Don''t make such a noise. Don't make such a noise.

1. Affirmative imperative sentences

a. Sentence pattern: verb base form ~. (subject omitted)

Stand up. Stand up.

Be quiet, please. Please be quiet.

b. Sometimes, in order to strengthen the tone, you can add do before the verb

Do sit down.

Please sit down.

Do study hard.

Must study hard.

Comparison

Imperative and declarative sentences Declarative sentences:

You sit down.

Sit down.

Imperative sentence:

Sit down. Sit down

(omitting the subject you)

c. When expressing an imperative sentence in a polite tone, please can be added at the beginning or end of the sentence. However, if please is added at the end of the sentence, a comma "," must be added before please.

Go this way, please.

Please go this way.

d. If there is an evocation in an imperative sentence, it must be separated by a comma "," and placed at the beginning of the sentence or End.

Li Ming, come here.

Li Ming, come here.

Come here, Li Ming.

Come here, Li Ming.

2. Negative imperative sentence

Sentence pattern: Don''t + original form of verb~

Don''t swim in the river.

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Don't swim in the river.

Don''t be late.

Please don''t be noisy.

Please do not make loud noises.

Note

When expressing prohibition, especially in slogans, "No + gerund" can also be used to express.

No smoking.

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No smoking.

No parking.

No parking.

Sentence conversion

Rewriting of imperative and declarative sentences

1. Imperative sentence = You must... (declarative sentence)

Come here. Come here.

= You must come here.

You must come here.

Don''t do that again.

You must not do that again.

2. Please + imperative sentence=Will you (please) (declarative sentence)

Please help me. Please help me.

=Will you (please) help me?

Are you willing to help me?

Come here on time, please. Please come here on time.

=Will you (please) come here on time

< p> Could you please be there on time?

2 Imperative sentences containing first and third person subjects

Let''s say good-by here.

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Let's say goodbye here.

Don''t let him do that again.

Don't let him do that again.

1 . Affirmative imperative sentence

Sentence pattern: ·Let + first person (me, us) ~.

·Let + third person pronoun (accusative: him, her, it, them) or Noun~.

Let''s go at once.

Let's go at once.

Let me try again.

Let I'll try again.

Let Tom go there himself.

Let Tom go there himself.

Attention

Let''s Including the other party, Let us do not include the other party. It is most obvious in the rhetorical question.

Let's go, shall we?

Let's go, shall we?

Let us go, will you?

Let us go, will you?

(Solicit the other party’s opinion)

2. Negative imperative sentence

Sentence pattern: ·Let''s (us, me) + not + original form of verb~.

·Don''t let + object or noun of third person pronoun+ verb base form.

Let''s not say anything about it.

Let's not say anything about it.

Don''t let them play with fire.

Don't let them play with fire.

Sentence pattern conversion

The imperative sentence is sometimes equivalent to a conditional adverbial clause introduced by if.

Imperative sentence: Use your head and you''ll find a way.

Conditional sentence: If you use your head, you''ll find a way.

If you Use your brain and you will find a way.

Note

When answering the rhetorical question sentence pattern of Let''s~, use Yes, let''s when affirmative and negative. Use NO, let''s not.

How to change an imperative sentence into an anti-question sentence:

The form of an anti-question sentence after an imperative sentence

a, Let's means The speaker makes suggestions to the other party. The subject of the short question is expressed as we, and the question is expressed as shall we or shan't we. For example: Let's have a cup of tea, shall we (shan't we)

b. Let me or Let us means that the listener makes a request, and the question uses will you or won't you.

Let me have a rest, will you (won't you)

< p> c. You can add a short question after other imperative sentences to make the tone more polite.

For example: Have a rest, will you

Stand up, will (won 't) you