An imperative sentence is a sentence used to indicate, request, or suggest that someone does something. In Chinese, imperatives typically omit the subject and begin with a verb or verb phrase. The mood can be made stronger or more polite as needed. A final particle can be added at the end to adjust the tone.

The most basic imperatives start with a verb, directly expressing a command or instruction. They are common in spoken language and short directives. The context usually determines the addressee, so an explicit subject is not needed.

'请' placed at the beginning of the sentence or before the verb makes imperatives more polite. It is commonly used for requests, invitations, or formal occasions. Adding '请' softens the tone and removes a coercive feel.

'别' placed before a verb indicates admonition or prohibition, equivalent to 'do not' in English. The tone can be commanding or admonishing, depending on context and particles. The common structure is '别 + verb'.

'不要' can stand alone as a sentence, or be followed by a verb, indicating prohibition or strong admonition. Compared to '别', '不要' is usually more complete in tone and can be more formal or more serious. In spoken language, the two can be interchanged depending on habit.

In imperatives, '要' expresses a demand or expectation that the other party needs to do something; the tone is relatively direct. '得' indicates something that must be done; the tone is stronger, with a sense of obligation or a rule. Both can be followed by a verb phrase.

Ending a sentence with particles can modulate the imperative's tone, making it sound more natural or more friendly. Common particles include '吧','啊','呢'; usage depends on context. Particles do not change the core meaning but affect the listener's impression.

When expressing suggestions, structures such as '还是','最好','可以','不如' are commonly used; the tone is more tactful than a direct command. Suggestion sentences usually pair with particles to sound more natural. The difference between suggestions and commands mainly lies in the degree of respect for the other person's choice.

In spoken language, objects, time phrases, and other components are often omitted, leaving only the core command. In high-frequency scenarios, short phrases feel more natural and efficient. Simplification does not affect the basic function of the imperative sentence, but it relies on context.

Some fixed phrases are frequently used as imperatives in specific scenarios; they are high-frequency practical expressions. These sentences are common in daily communication, public places, and service settings. Knowing these expressions helps for quick responses.