同义句:He bought his son a present
否定句:They didn't play football in the playground.
一般疑问句:Did they play football in the playground?
肯定回答:Yes,they did.
否定回答:No,they didn't
保证准确率~
同义句:He bought his son a present
否定句:They didn't play football in the playground.
一般疑问句:Did they play football in the playground?
肯定回答:Yes,they did.
否定回答:No,they didn't
保证准确率~