Will his brother be able to drive himself soon?
Yes, he will. 肯定回答
No, he won't 否定回答
Is he taking the driving lessons now?
Yes,he is. 肯定回答
No, he isn't. 否定回答不能连在一起吗如果是连在一起的话，回答会很怪的。Will his brother be able to drive himself soon?Is he taking the driving lessons now?Yes, he will. Yes, he is.No, he won't. No, he isn't.这样很不符合表达习惯。