多少节数学课的英文怎么写

我知道数学课不受欢迎。

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

令人惊讶的是，数学课被选为他们最喜欢的科目。

Surprisingly, mathematics was voted their favourite subject.

他讲数学课。

He gives lessons in mathematics.

How many subjects are you taking this year?

你今年修多少门课？

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

我得跟你说多少回不要做那种事？