否定句：Oh,and we don't have to be quiet in the library,either.
疑问句：Oh,do we have to be quiet in the library,too?
肯定回答：Yes,you do.那如果是这句话呢：“ oh ,and you also have to be quiet in the library ”否定句：oh,and you don't have to be quiet in the library,either .疑问句：oh,and do you have to be quiet in the library,too?肯定回答:Yes, we do.那如果再将you变成she呢如果you 变为she ，do 变为does ，其它不变。