It is giving a command, so it is an imperative sentence.
No. Verbs are not imperative like they can be past or present, but it is the way they are used that makes an imperative sentence. Imperative sentences don't have subjects the subject - you - is implied. Sit down! -- the subject you is implied = you sit down! Other imperative sentences: Look out! Beware! Come here.
I assume you mean gives a command as in "Sit down, please!" It is called an imperative sentence.
Request are made using the modal auxiliary verbs will/can/ would/ could.Imperative sentences don't have a subject so a subject needs to be added too.Also you could use please.eg imperative sentence - Sit down!request - could you sit down please.
yes
No, sat is a verb - the past tense of sit. You can begin a sentence with a verb if it is an imperative sentence but then the verb is in the base form not past. eg Sit down! Look out. Clean up your room.
"Sit down" is a verb phrase used to describe an action, where "sit" is the verb and "down" is an adverb indicating the direction of the action. The phrase as a whole is not considered an adverb.
It is an imperative question.
"Go to the store for me." is an imperative sentence with a prepositional phrase. "to the store" is the prepositional phrase.
Imperative sentences are used to make people do things ie commands, suggestions, offers. They have the basic form of the verb and the subject (you) is implied. eg Sit down. = you sit down - subject you is implied Other examples: Take one tablet twice a day. Come in. Have a drink
An imperative sentence is a type of sentence that gives instructions or commands. It typically ends in a period or an exclamation point. Examples include "Close the door" or "Please sit down."
It could be either. 'Sit!' as an imperative form of the verb to sit (an instruction given to a dog, for example) is a sentence in its own right. Sit can also be just one word in a sentence, for example 'I asked you not to sit there.' In that case it would be a fragment.