Add to that question,
1. "He drove very slowly."
Is 'very' an adverb or adjective in the sentence?

2. If 'more slowly' is correct? What about that following sentence?

"He drove much more slowly today than yesterday."

Is "much more slowly" correct?

All the above sentences in both posts are correct.

'Very' is an adverb.

vkr6078 Which is right in an English test?"He drove more slowly/slower today than yesterday.""More slowly" or "slower"?

Rover's reply is correct. However, in a test, use "more slowly". I believe this is your teacher's choice.

I can agree with you. Both are OK.

According to me, "more slowly" would be the more appropriate choice too! Happy New Year!!

vdbAccording to me, "more slowly" would be the more appropriate choice too! Happy New Year!!

"According to me" is not correct. It should be "In my opinion".

Happy New Year!

I agree to some extent with you, tamguatlay. But, "according to me" is a grammatically correct phrase. There's nothing wrong with it grammatically. We just don't say it. Just not the right way to convey what I meant; I admit that.

"According to him, her, them, Peter..." but not "According to me" or "According to us''.

OK. What about "according to you?"

"According to me" it sounds awkward - maybe it can be used in spoken language but is more informal - is weird. i have never heard anyone use "according to me" (i mean, a native speaker)