love for granted是什么意思？为什么for后是过去分词？
isn't和doesn't怎么用
do you，have you，are you分别在什么情况下使用？
has和has been的区别 has 是单数主语后的动词形式，意思是有.has been 第一种是系动词be的完成时，第二，其后跟过去分词，表示现在完成时的被动语态.She has a book.她有本书She has been to NewYork.她去过纽约.She has been beaten by Tom.
have you.和are you.和do you.这三个有什么区别？分别如何使用？
