she's=she is(她是）/she has(她做过……）
her：她的/“她”的宾格
She's a student.
=She is a student.
她是一名学生.
She's ever been to an amusement park.
=She has ever been to an amusement park.
她曾经去过游乐园.
This is her book.这是她的书.
I love her.我爱她.
注意：,she has 表示"她有"时,不能缩写为 she's. 只有用在现在完成时或现在完成进行时的时候才能缩写.
She has a book.她有一本书.
≠She's a book.她是一本书.（没这样说的）
