把下列句子找错

前面用了复数friends,后面却用is和American,前后不一致.
改法:1.把friends改为friend.
2.把is和American改为are和Americans.

Her friends are American

Her friends is American

改为:Her friends are American
或Her friend is American

Her friends are American.

her friends 是一个复数形式，（既她的朋友们．）所以应该应把IS该为ARE.
她的朋友是美国人．