both...and...动词都是复数
not only ...but also,neither...or,either or 当连接并列主语时,动词就近原则.也就是说动词靠着那个主语近,就和哪个主语一致.因为主语在前,谓语动词在后,所以动词和后面的一个主语一致.
Not only his classmates but also his teacher is right.动词和后面的teacher 一致
其他的也一样.