is和does在第三人称中的用法是什么?为什么有时用Does he····有时用Is he·····?

is和does在第三人称中的用法是什么?为什么有时用Does he····有时用Is he·····? He sure is.中的sure用法是什么?He sure does. Where does he live?为什么用does 不用is is和does的区别为什么where does he livelive不能用lives 为什么用does什么情况用do What is he waiting for?为什么用is不用does 关于英语be动词用法he后面为什么能用is不是用does吗? he is 和 he has和he does.的用法,区别 用“有时······有时······有时······”描写夏天的太阳 so he is和so is he so does he和so he does的区别 does he have a wide mouth 为什么要用does,不用is Does he jump high?为什么这里用Does/而不用Is? 初中英语语法1.where does he live?为什么用does 2.how old is his sister