Jack is hie father and Bob are his brother.错在哪里还有Tom and i am good friends.
问题描述：
Jack is hie father and Bob are his brother.错在哪里
还有Tom and i am good friends.
答
Jack is his father and Bob is his brother
Bob是一个人，单数，所以谓语要用is
还有Tom and i are good friends.
Tom 和 I是两个人，复数，谓语用are
答
Jack is 【his】 father and Bob 【is】 his brother.
Tom and I 【are】 good friends.
前面的主语是两个人,所以is改为are.