Well I started this thread cause I just started Chinese again in School, and some how forgot that is was very hard. We are working on sentences with the "Ni zenme" being used. I tryed these traslations and got caught on a few, and was hoping you could just confirm them for me. I probaley will have alot of questions in the future.

昨天的电影很好你怎么没去看？
Yesterday's movie was very good, how come you didn't watch?

十点上课你怎么十点半才来？
Class is at 10:00, how come you came at 10:30?

昨天是小高的生日你怎么没有来
Yesterday was little Gao's birthday, how come you weren't there?

今天的考试很容易你怎么考的这么不好
Today's test was very easy, how come this test is no good?

明天有考试 你怎么没有复习
Tomorrow you have a test, how come you haven't reviewed?

高小音在图书馆工作你怎么不认识她
Gao lives and works at a library, how come you can't understand her?
I am pretty sure this translation is wrong.

八点半才上课你怎么七点就 来了
Class is at 8:30, how come you are here at 7:00?
could someone explain this one, I felt I translated it right, but I kinda
guess just by the structure of the sentence.

今天是星期一你怎么没去上课
Today is monday how come we have to go to class?


Any thing at all I would love to know about the translations.