同义句转换：Who is your math teacher?1.Who is your math teacher? Who ( ) ( ) math?2.Let me help you learn English. Let me help you ( ) your English.3.He buys his son a toy car. He buys a toy car ( ) his son.4.Can you play the piano well? ( ) you ( ) ( ) ( ) the piano?

.Who is your math teacher?
Who (teaches ) (your ) math?
2.Let me help you learn English.
Let me help you ( with ) your English.
3.He buys his son a toy car.
He buys a toy car (for ) his son.
4.Can you play the piano well?
( Are ) you (good ) ( at ) ( play ) the piano?

1 teach your
2 study
3 for
4 could do well with

teaches you
with
for
Are good at playing

.Who is your math teacher?
Who (teaches ) (your ) math?
2.Let me help you learn English.
Let me help you ( with ) your English.
3.He buys his son a toy car.
He buys a toy car (for ) his son.
4.Can you play the piano well?
( Are ) you (good ) ( at ) ( play ) the piano