I agree with your post. TV shows and movies helped a lot, and many wrong things just sound wrong. Pure grammar exercises can only teach so much.
However a solid understanding of grammar helps. For example in your post you wrote "like if doing". Correct would be "as if doing" since "as if" is a conjunction and "like" is a preposition. It was probably just a typo, and you would have caught it during a proof-read since it sounds "wrong" but actual grammar knowledge will confirm any suspicions.
However a solid understanding of grammar helps. For example in your post you wrote "like if doing". Correct would be "as if doing" since "as if" is a conjunction and "like" is a preposition. It was probably just a typo, and you would have caught it during a proof-read since it sounds "wrong" but actual grammar knowledge will confirm any suspicions.