并列主语如果指的是同一人、同一物或同一概念，谓语动词用单数，这时 and 后面的名词前没有冠词。
The secretary of the Party branch and director of that factory often works with the workers.
陈述部分用everybody, everyone, somebody, someone, anybody, anyone, nobody, no one或 no +复数名词等作主语时，反意部分用they。而陈述部分用everything,something,nothing, anything时，反意部分代词则采用单数，用it。
Everything is all right, isn’t it?
Somebody is waiting for you, aren’ they?
主语是以-ics 结尾的学科名词以及news , works (工厂)等都属形式复数，而意义单数的名词，其谓语用单数形式。另外means一词单复数同形应视具体情况而定。
Mathematics seems to be difficult to learn.
A new means of teaching is being used in that school.
the +形容词或分词作主语时，如指一类人。其谓语用复数，如指抽象概念，其谓语用单数
The rich are not always happy.
The new is sure to replace the old
主语是family, team, group, crowd, class, committee等集合名词时，如果作为一个整体看待，谓语用单数形式，如指的是全体人员时，谓语用复数。
His family are all music lovers.
类似这样的集体名词有：
family, class, audience, committee, crowd, crew, group, party, population, team, public, council, village等。
主语 people 作“人们，人民”解时，谓语动词用复数，作“民族”解时，有单复数之分。(police , cattle , public )
Our people is a great one.
There are 56 peoples in China.
主语是疑问代词who, what, which,不定代词all, more, most, any, none等以及名词half, part, the rest等既可表示复数意义又可表示单数意义，其谓语视情况而定。
Half of the visitors are from Europe.
Half of the fruit is bad.
“……的几分之几”和“……的百分之几” 作主语时，其谓语用单数或复数取决于 of 后的名词。
Three-fourths of the surface of the earth is sea.
40 percent of the students in our class are girls.
“one of + 复数名词 + 定语从句”之前有the only, the very, the等限定词和修饰语时，定语从句的谓语动词用单数形式。
She is the only one of these women who plays the violin.
one of +复数名词+（单）谓语
One of the students is from the south. .
one of+复数名词+定语从句（从句动词用复数），
He is one of the boys who are ready to help others
the (only) one of+名词（复数）+定语从句，从句中谓语动词用单数，表示众多中只有一个
He is the only one of the students who comes earliest.
