英语改成过去时的肯定/否定/一般疑问/特殊疑问l am a he is They play the piano he watches tv括号提问

What are you?
How is he?
"a fhome"什么意思??
When does he watch TV?

What are you?
How is he?
How long does they play the piano?
When does he watch TV?

三楼的最后应该是When did he watch TV?会比较好
即
I was a doctor.
I wasn't a doctor.
Were you a doctor?
What were you?
He was happy.
He wasn't happy.
Was he happy?
How was he?
They played the piano at home。
They didn't play the piano at home.
Did they play the piano at home?
Where did they play the piano?
He watched tv at 5:00 o'clock.
He didn't watch tv at 5:00 o'clock.
Did he watch tv at 5:00 o'clock?
When did he watch tv?

什么意思啊，能不能补充一下？

I was a doctor.I wasn't a doctor.Were you a doctor?What were you?He was happy.He wasn't happy.Was he happy?How was he?They played the piano at home.They didn't play the piano at home.Did they play the...