1.If you work hard,you will succeed.（条件状语从句改为分词短语做条件状语）
working hard,you will succeed.
2.when I was walking in the street ,I saw Tom.（时间状语从句同上）
walking in the street ,I saw Tom.
3.Because I was ill,I didn't go to school.（原因状语从句）
Being ill ,I didn't go to school.
4.Although he had been taught many times,he still didn't know how to do it .（让步状语从句）
Having been taught many times ,he didn't know how to do it .
5.He was so careless that he made many mistakes.（结果状语从句）
He was so careless as to make many mistakes.
6.He got up early in order that/so that he could catch the early bus.（目地状语从句）
He got up early in order to catch the early bus.
7.He runs fast than his brother does.（比较状语从句）
He runs fast than his brother.
