4.有些名词的单数和复数形式一样,作主语的时候,其谓语动词单复数由上下文决定(尤其注意其前的修饰语)，这一类名词有: means, works, deer, fish, sheep, Chinese,Japanese等。

　　Not every means is useful.不是每种方法都好使。

　　Not all means are useful.不是所有的方法都好使。

　　These means are very good.这些方法很好。

　　Such a means is really unpleasant.这样的方法确实是令人不愉快。

　　若没有特定的修饰语或语境，则用单数或复数谓语均可：

　　There is [are] no good means.没有好的方法。

　　Are [Is] there any other means of doing it?做这事还有其他的什么办法吗?

　　5. kind“种类”作主语

　　this kind of book = a book of this kind (这种书) ,其谓语用单数;短语this kind of men = men of this kind = these kind of men (口语) (这一类人),但this kind of men的谓语用单数, men of this kind和these kind of men的谓语用复数, all kinds of后跟复数名词,谓语用复数形式。例如：

　　This kind of men is dangerous.

　　Men of this kind are dangerous.

　　6.在主谓倒装的句子中,谓语动词的数应与其后的主语一致。例如:

　　Between the two windows hangs a picture.

　　7.“分数或百分数+名词”构成的短语以及由“a lot of, lots of, plenty of, a large quantity of, a heap of, heaps of, half of +名词”构成的短语作主语时,其谓语动词要与短语中of后面的名词的数保持一致,这是因为短语中后面的名词是中心词,而短语中前面的量词是修饰语。例如:

　　Lots of damage was caused by fire.

　　about three-fourths of the earth’s surface is covered with water.

　　Three-fifths of the workers here are women.

　　和这种情况类似的还有“a number of +名词复数”。但是,“the number of +名词”的中心词却是number。试比较：

　　A number of students have gone to the countryside to help with the autumn harvest.

　　The number of pages in this book is two hundred.

　　【补充】

　　a (large) quantity of修饰可数或不可数名词,其短语作主语时,谓语动词用单数。

　　A large quantity of people is needed here.

　　quantities of修饰可数或不可数名词,其短语作主语时,谓语动词一般用复数。例如:

　　Quantities of food (nuts) were on the table.

　　短语in quantity, in large quantities意为 “大量”; in small quantities意为“少量”。

　　8.表时间长度、钱数、速度等的词组作主语，此时通常将其视为整体，谓语用单数。如：

　　Twenty years is a long time. 20年是很长的时间。

　　Ten dollars is all I have left.我只剩下10美元。

　　以上介绍了主谓一致易错点，希望对各位考生有所帮助。