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