0
"What I did is" is correct. It does not matter that the doing occurred in the past: it is still what I did, and will always be what I did. The answer below represents a very popular misuse of tenses.
You are talking about something you did in the past, because you are using "did", therefore the correct statement is, "What I did was..." If you were to use the verb "is" or "to be" then that means you are speaking about the present, so the correct statement using this verb is "What I am doing is..."
What else can I help you with?
Is the phrase for free grammatically correct?
Yes, 'for free', is grammatically correct.
Not like that- is this grammatically correct?
"Not like that" can be grammatically correct, depending on the context.
Is 3-Day tour grammatically correct?
Yes! That is grammatically correct!
You are not knowing is grammatically correct or not?
This is not grammatically correct. The correct form is 'you do not know', or the abbreviated 'you don't know'.
Is it grammatically correct to say What a drunkard you are?
'What a drunkard you are' is a grammatically correct English sentence.
Check if sentence is grammatically correct-That was wrong.?
"That was wrong" is a grammatically correct sentence.
Is this sentence grammatically correct- sometimes i amaze myself?
Yes, it is grammatically correct.
Is Almighty God grammatically correct?
Yes, Almighty God is grammatically correct.
Is it grammatically correct to write-He sailed his boat on the river.?
Sure. It would also be grammatically correct to write He spoggled his nubbix on the goober. Grammatically correct and meaningful are not the same.
Is you don't miss me do you grammatically correct?
The phrase "Is you don't miss me do you" is not grammatically correct. It should be rephrased to something like "Don't you miss me?" to be correct.
Is it grammatically correct to say your old sister?
No, it is not grammatically correct. The correct way to say it is "your older sister."
Is it grammatically correct I am annoyed of the way you behave?
Saying, "I am annoyed of the way you behave.", is grammatically correct.
