The man has to see a doctor. （改为否定句）
The man to see a doctor.They are staying there for three weeks.（对划线部分提问）
are they staying there？Tom is 10 years old. Bob is 12 years old. (合并为一句)
Tom is two years Bob.Shanghai is bigger than any other city in China. (改为同义句)
Shanghai is city in China.I went to bed after my father came back last night. (改为同义句)
I go to bed my father came back last night.He played tennis with his father yesterday. (改一般疑问句)
_______ he _______ tennis with his father yesterday?I had a good time at the party yesterday. (同义句)
I _________ __________ at the party yesterday. It takes him an hour to do the homework every day.
He _________ an hour ________ the homework every day.He sees a film with her once a week. (对划线部分提问)
________ ________ does he see a film with her?Drink some milk before you see the doctor. (否定句)
________drink _______ milk before you see the doctor
They have been away from here since two years ago．（改为同义句）
________ ________two years________they left here．
They started to play the piano one or two hours ago．（改为同义句）
They started to play the piano________ ________ ________two ago．
We started to skate two hours ago．（对画线部分提问）
________ ________you start to skate？
He ran in the school for half an hour．（对画线部分提问）
________ ________ ________he run in the school？
Neither this answer nor that one is right．（改为同义句）
________ ________the answers________right．