多少節數學課的英文怎麼寫

我知道數學課不受歡迎。

I am sensible of the fact that mathematics is not a popular subject.

令人驚訝的是，數學課被選爲他們最喜歡的科目。

Surprisingly, mathematics was voted their favourite subject.

他講數學課。

He gives lessons in mathematics.

How many subjects are you taking this year?

你今年修多少門課？

How many times do I have to tell you not to do that?

我得跟你說多少回不要做那種事？