Jack is ten years old and Ben is fourteen years old.保持原意

问题描述:

Jack is ten years old and Ben is fourteen years old.保持原意
还有一句:I study in a new school .So does Mary.保持原意

Jack is four years younger than Ben.是Jack年纪轻嗯.Jack 比Ben 小四岁I study in a new school .So does Mary.保持原意I study in a new school and Mary(),()是这样的形式does,too