It is not grammatically incorrect, but not right, either. We say wishes come true.
The correct sentence is 'I will come home at 3pm'.
'Did she came...' is incorrect. 'Did she come...' is correct.
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?
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.