但quantities of ...作主语时，谓语动词用复数。

　　About one third of the books are worth reading.

　　A quantity of water is needed for cooling purpose.

　　＝Quantities of water are needed for cooling purpose.

　　2．"a great deal of/a large amount of＋不可数名词"作主语时，谓语动词用单数。但large amounts of ...作主语，谓语动词用复数。

　　A large amount of grain has been eaten by birds.

　　＝Large amounts of grain have been eaten by birds.

　　3．a number of, a variety of修饰名词作主语时，谓语动词用复数；the number of, the variety of后接名词作主语时，谓语动词用单数。

　　The number of the students in our class is 50, and a number of them are from Hebei.

　　A number of students have gone for an outing.

　　4．由kind, form, type, species, portion, series等修饰的主语，其谓语动词的单复数取决于这些词的数，而不是它们后面所跟名词的数。

　　Some new forms of art were discussed at the meeting.

　　(三)其他情况的主谓一致

　　1．当主语后带有as well as, as much as, no less than, with, along with, together with, like, rather than, but, except, besides, including, in addition to等连接的成分时，谓语动词的单复数取决于前面主语的单复数。

　　The house, including the garden and the park, was sold.

　　I think the boss, rather than the workers, was to blame for the loss.

　　2．在"one of＋复数名词＋who/which/that"引导的定语从句中，定语从句的谓语动词用复数。one前面如果有the only/very修饰，定语从句的谓语动词用单数。

　　This is one of the questions that have been asked by the students.

　　He is the only one of the officers who was invited to the ball.

　　3．"more than one/many a(n)＋单数可数名词"作主语时，谓语动词用单数。

　　More than one boy likes to play basketball while many a girl is good at playing baseball.

　　4．强调句it is/was ... that/who ...中，主句谓语总是用单数。

　　It is he who tells us the news.

　　5．不定式、动词­ing形式或从句作主语时，谓语动词用单数。

　　To obey the law is everyone's duty.

　　Eating too many sweets ruins your teeth.

　　Why he did it was very clear.

6．由两部分构成一个整体的物体名词如shoes, trousers, pants, jeans, glasses等作主语时，谓语动词用复数。但如果这类名词前用了a pair of, a piece of, a kind of, a series of等