I saw people leave their comments in some strange videos on Youtube:
What did I have just watched?
What have I just watched?
Is there any difference between the two sentences? Which one is more grammatical?
English Language Learners Stack Exchange is a question and answer site for speakers of other languages learning English. It only takes a minute to sign up.Sign up to join this community
What did I have watched?
The sentence is ungrammatical. The words "did" and "have" are auxiliary verbs. You don't use another auxiliary verb with did. You use the auxiliary verb did with the base of a verb to form a question in the simple past tense. So the correct sentence is:
What did I just watch?
The other question (What have I just watched?) is grammatical - it's in the present perfect tense.