Why you are late for school?你为什么上学迟到了?Because my bike has broken on the way, and this is why I am late.因为我的自行车在路上坏了,这就是为什么我迟到了. Why don't you read English in the morning?早上你为什么不读英语呢?I did! That's why I could improve my English so much!我读了!这才是我的英语为什么提高了这么多的原因!