Can Donny play baseball?
多尼会打棒球吗?这是一个一般疑问句
肯定回答是 Yes,he can.否定回答是 No,he can't.
变为肯定句：Donny can play baseball.
变为否定句：Donny can not play baseball.
Can he play basketball?
他会打篮球吗?这是一般疑问句
肯定回答是 Yes,he can.否定回答是 No,he can't.
变为肯定句：He can play basketball.
变为否定句：He can not play basketball.
Does he have a sister?
他有一个姐妹吗?
肯定回答是 Yes,he does.否定回答是 No,he doesn't.
变为肯定句：He has a sister.
变为否定句：He doesn't have a sister.