Question

Is i was waiting for you gramattically correct

Answer 1

It is correct as the subject requires is. Its past form is was.

I was waiting for you.

This will be more grammatically correct.

For your information:

• I, requires am [past form was]
• He, she, it require is [past form was]
• You, they require are [past form were]

Answer 2

$\sf\huge\bold{Answer:}$

Is i was waiting for you

No,it is not correct gramatically .

$\fbox{Correct form :}$

$↪$Was I waiting for you ?

$↪$I was waiting for you .

Rules :

• With I we'll use was(past),am(present) and shall(future)
• With We/He/She/ we'll use were(past),will(future),and are for we and is for he and she. (present)