一.就近原则
1. 由并列结构或连词(either…or, neither…nor,not…but, not only…but also, or等)连接的并列主语,谓语动词与较近的那个名词或代词保持一致。
Neither his parents nor Tom_____(be) at home.
2. 在倒装句和there be句型中,谓语动词与后面的第一个主语保持一致。
There _____(be) a book and some pens on the desk.
There ______(come) the bus.
3. 在定语从句中,关系代词作主语,其谓语动词应与它所指代的先行词保持一致。
I know the man who_____(be) talking to my father.
4. 在强调句中,连接代词又在句中作主语,这时它应与被强调的主语保持一致。
It is Mary’s brother who_____(be) injured in the car accident yesterday.
二.意义一致原则
1. 当主语与谓语动词之间插入along with,with,as well as,together with, besides,except, but, including等短语时 ,谓语动词与第一个主语保持一致。
I along with my sister_____(be) going to Shanghai next month.
2. 由“what”引导的名词性从句作主语时,谓语动词通常用单数形式。
What I want to say _____(be) just “ Take care!”.
3. “…+ (of) +名词”作主语时,若“of”后的名词为单数(不可数名词),则谓语