I'd like to ask about how to use "more".
Would you take a look at the following sentences?
1) If I had studied harder, I could have passed the exam.
2) If I had studied more, I could have passed the exam.
Can I use "more" instead of " harder"? If so, do they express the same meaning?
I think both are correct.
Technically, the former means you did study, but maybe not very seriously, while the latter means that you didn't spend enough time studying. In practice, they have the same meaning.