Yes, the sentence is correct. The implied subject of the sentence is you.
"You come..."
"You enter..."
The correct grammar for this sentence is: When did your friend come?
Yes.
No this is incorrect grammar. To make the sentence grammatically correct you should say: One of my cousins came yesterday.
The sentence "What time should you come" is grammatically correct. It is a question formed using the interrogative pronoun "what" to ask about the specific time one should arrive. The subject "you" is followed by the helping verb "should" and the main verb "come," making it a complete and coherent question.
No, it is not correct. I contains a very common mistake of using "I" as an object when it is part of a compound object (of the preposition "with"). "I" is correct as a subject; "me" is correct as an object. The easiest way to determine whether to use "I" or "me" is to try the same sentence with "I" or "me" alone--leaving "my friends" out of it for this test. You would say, "Can you come with me to Central Park?" You would never say, "Can you come with I to Central Park?" This tells you that you need to use the objective form, "me": "Can you come with my friends and me to Central Park?" No it's correct
The correct sentence is 'I will come home at 3pm'.
'Did she came...' is incorrect. 'Did she come...' is correct.
The correct grammar for this sentence is: When did your friend come?
No, 'Is he should never have come here' is not a correct sentence and it should be 'He should never have come here.'
The correct sentence is "I come from" as it indicates your place of origin or where you are currently from. "I came from" would be correct if you are referring to a past event of where you came from.
The correct form is When did I come? (I did come when).
The correct sentence is "She didn't come." "Come" is the past participle of the verb "to come," so it should be used with the auxiliary verb "do" in the negative form as in this sentence.
Yes, the sentence "you saw your uncle and aunt come out" is grammatically correct. It describes the action of seeing both your uncle and aunt exiting from a place.
Yes, this sentence is correct grammar.
If it's used as a question, yes. If not, then it is a correct phrase but not a complete sentence.
Yes.
Yes, that is correct. But there should not be an article("a") before "correct".