它的谓语动词按主语是复数用。
she and her friends是由并列连词and连接的并列主语，是复数，谓语动词要按主语为复数用的。例如
She and her friends are all Chinese(她和她的朋友们都是中国人). 句中的谓语动词就用了表示复数的系动词are.
she and her friends谓语用什么
因为主语Sue and her friends 整体看相当于they，后面的谓语动词显然是动词原形形式。
【and/both~and~】连接两个单数名词作主语时，指代复数概念，谓语动词用复数
如:She and her friend are watching TV。
She and her friends are at the fair.
当主语后面跟有with， together with， like， except， but， no less than， as well as 等词引起的短语时，谓语动词与前面的主语一致。 如：
The teacher together with some students is visiting the factory。
He as well as I wants to go boating， as did most of her friends
she and her friends谓语用什么
she and her friends是复数，谓语动词用原形，如果是一般过去时，谓语动词用过去式，如果是一般将来时，谓语动词用will+动词原形
