表示时间、距离、重量、长度、价值等的复数名词作主语表示整体概念时,其谓语动词常用单数形式。
Two months is quite a long time.
以s结尾的名词本身不表示复数意义时,谓语动词通常用单数形式,如news、maths、physics等。
family、class、team、group等集体名词作主语,若指一个整体时,谓语动词用单数形式;若指具体成员时,谓语动词用复数形式;
名词后跟with、together with等引导的短语时,后面谓语动词的数与前面的名词保持一致形式;
My father,together with his friends,is going to visit the Great Wall.
由either、either……or……、neither……nor……、not only……but also……、等词连接并列主语时,谓语动词常和最接近的主语保持人称和数的变化;
Neither you or Li Lei has been to Shang Hai before.
以there、here开头的句子,若主语不止一个,其谓语动词通常和临近的主语一致;
There is a pen and some books on the desk.
当kind of、pair of、glass of等表示确定数量的名词短语修饰主语时,谓语动词应与kind、pair、glass等的形式一致;
There are two glasses of water on the table.
由“a lot of/lots of/plenty of/a number of +n”或者 “分数+名词”作主语时,谓语动词的形式根据名词的单复数而定; ”the number of+复数名词“作主语时,谓语动词用单数形式;
Many people have been to London.
代词something anything nothing evenyone anybody nobody each neither either little much one等,谓语动词用单数形式;
all some none most any等代词作主语时,若指复数概念,谓语动词用复数形式;若指单数概念,谓语动词用单数形式;
Not all work is difficult.
Not all student are here.
当疑问代词what、which、who作句子主语时,谓语动词有以下几种情况:
当他们表示的内容是复数时,谓语动词用复数形式; 当他们表示的内容是单数时,谓语动词用单数形式;
Which is taller,Tom or Kate?
当他们引导定语从句,并且在定语从句中作主语时,谓语动词应与先行词保持人称和数的一致;
The boy who is playing football is in Class One.
当主语有同位语时,谓语动词要根据主语的单复数来确定。区分主语和同位语的方法是:用逗号连接的就是同位语,用连词and连接的就是主语;
Susan,Mr.Mott's wife,is a scientist.
Jim and Tom are middle school students.
有些adj前面加上定冠词the,如the poor、the rich、the young、the rich、the dying等用来表示一类人时,主语是复数,谓语动词也是复数。
The poor are very happy,but the rich are sad.
当汉语意思为“一两个”的词组作句子的主语时,谓语动词变化如下:
当"a/an+单数名词+or two"作句子主语时,谓语动词用单数形式
An apple or two is enough.一两个苹果足够了.
当“one or two+复数名词”作句子主语时,谓语动词用复数形式
One or two girls have come here.一两个女孩已经来这里了.
两个或两个以上的单数名词用and连接起来作主语时,谓语动词有下列三种情况:
当两个并列主语不是同一事物时,谓语动词要用复数形式;
The boy and the girl are from Japan.
当这两个名词是同一人或事物时,谓语动词要用单数形式;
The teacher and writer is my friend. 这名老师兼作家是我的朋友。
当and连接的两个主语被each、every、no修饰时,谓语动词通常用单数形式.
Every teacher and every student deeds dictionaries.