英语单复数句子有and时系动词怎么用比如：There( )books an pen .和There( )pen and

第一个用 are There are books and a pen。第二个应 is There is a pen and books。就近原则 哪个靠近there 用哪个 但 There be 后跟 多种也可用are 如 There are a pen and books。