No matter what you say, don't worry about it.

It seems he has an interest in music.

I get the feeling that he's hiding something.

She is learning how to use the comparative in English.

He was so excellent that he was allowed to skip a grade.

He skipped a grade because of his excellent grades.

We play Sheng Ji every Friday.

He is in the third year of junior high school, or in other words, he is in the 9th grade in school years.

Epidemiology is the science that studies the occurrence and spread of diseases.

I am majoring in political science at university.