我知道數(shù)學(xué)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(shù)學(xué)課被選為他們最喜歡的科目。
Surprisingly, mathematics was voted their favourite subject.
他講數(shù)學(xué)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？