有什么区别呢 怎么用汉语表达 它的不同时态
They don't like to watch TV.They didn't like to watch TV.
They like to take exams.They liked to take exams.
Why are you so angry?Why were you so angry?
He had to write a letter .He have to write a letter.
I was fatter than you.I am fatter than you.
请帮翻译一下.