轉英文~很趕

中文語法有點令人困惑，但以下翻譯可作參考

Because I had to wait for my older brother to teach me how to do my math homework, I waited till he came back at one o'clock at night. Since he's in university and has many things to do, he would come back very late every night. It took till 3 o'clock for him to finish tutoring me on my math homework, so I (he?) was late on Thursday.

Because I that night must wait for my brother to teach me the mathematics, so I stayed silently until at 1 at mid-night! Every night he came home late due to his busy working in the university. When I finished my homework, it's already at 3 a.m. So I was late on Thursday. This is the situation.