主谓一致

主谓一致指的是谓语动词在人称和数上要和主语保持一致。主谓一致遵循的原则包括语法一致原则、意义一致原则和就近原则。
语法一致指的是主语是单数形式，谓语动词就用单数形式；主语是复数形式，谓语动词就用复数形式。意义一致就是主语形式上为单数实为复数意义，谓语动词则要用相应的复数形式。就近原则指的是谓语动词的单、复数形式要和靠近它的主语部分保持一致。

语法一致原则

(1)and连接的两个单数名词前若用each，every，no，many，a修饰，该名词短语作主语时，谓语动词用单数形式。
Every student and every teacher has attended the meeting.
每个学生和老师都参加了这个会议。
No book and no pen is found in the schoolbag.
书包里没有书和钢笔。
Many a boy and many a girl has made the same mistake.
许多男孩和许多女孩犯了同样的错误。
(2)两个主语由as well as，rather than，but，together with，along with，with，except，besides，including，in addition，such as等连接时，谓语动词的数与最前面的主语保持一致。
The students, together with their teacher, are going to have a picnic this weekend. 
这个周末学生和他们的老师将举行一次野餐。
The teacher as well as the students was present at the meeting.
那位教师和学生们出席了会议。
(3)在“one of+复数名词+定语从句”的结构中，定语从句的谓语动词要用复数；而在“the only(very)one of+复数名词+定语从句”的结构中，定语从句的谓语动词要用单数。
He is one of the students who get there on time.
他是准时到达那里的学生之一。
He is the only one of the students who goes there on time.
他是唯一一个准时到达那里的学生。
习题练习
Toy and sorrow         next-door  neighbours.
A.is  B.are  C.were  D.be
【参考答案】B
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