1.由…or…, either…or, neither…nor, not only…but also…, not…but…, there be句型 等连接的并列主语，谓语动词常和靠近的作主语的名词在单复数上保持一致——就近原则。 ①Not only he but also I am invited. ②I or his brothers were to blame. ③Neither I nor he is to attend the meeting. ④Not only the students but also their teacher is enjoying the film. ⑤There is a pen, a knife and several books on the desk.