1、Not only I but also Jane and Mary are tired of having one examination after another.这题的解释是:最近的主语是Jane and Mary,所以谓语动词应用复数形式。2、There is a pen and two books on the table.为什么两道题不一样呢,这两道都是主谓一致的题目,为什么一个是are 一个是is呢