5.单复数错误与主谓不一致错误。

这个考点在六级改错中出现的也很频繁,同学们对这种错误也比较熟悉,做题时一定得仔细观察句子的主语：

(1)Most education system neglect exploration, under-

standing and reflection.(07年1月老六级第五题)句子的主语是education system，而前面的most和后面的neglect都提示我们这里主语应该是个复数,所以将system改成systems.

(2)There is therefore a need for resources and

methods of teaching that facilitates a deep under-

standing of science in an enjoyable way.(07年1月老六级第九题)这里facilitates前面跟的主语是resources and methods of teaching,主语是复数,所以根据主谓一致原则,要把facilitates改成facilitate。

(3)New screening tests are identifying children at

risk before they get discouraged by year of frustra-

tion and failure.(06年6月六级改错第8题)表示“多年的沮丧与失败”是一个复数的概念,因此要把year改成years.

(4)physical object like cooking pots, computers and

bathtubs.(04年6月六级改错第三题)这里的主语是physical object，也就是后面的那么些东西,因为不止一样东西,所以object得用复数形式objects.

(5)There is no guarantee that plant breeders can cont-

inue to develop new, higher-yielding crop…(04年1月六级改错第10题)在形容词前没有不定冠词,所以可以认为这里的crop表示一个复数概念,因此用crops.

6.指代错误与冠词错误。

同单复数一样,解指代错误题也要关注指代的对象到底是单数还是复数:

(1)During the 1980s’ culture wars, school systems

across the country pulled some books from library

shelves because its content was deemed by parents

and teachers to be inappropriate.(07年1月新六级改错第9题)这里its指代前面的some books，所以物主代词应该是

their而不是its.

(2)As a result, children memorize processes such as

mathematical formulas or the periodic table, only to

forget it shortly afterwards.(07年1月六级改错第7题)

容易发现it指代前面的processes，因为是复数,所以该用复数的宾格them.

(3) At same time(06年6月六级改错第七题)地球人都知道的at the same time是固定短语。

(4) in first paragraph(06年1月六级改错第一题)序数词前面要加the，这是初中的知识。

(5) a number of leprosy cases around the world has

been cut by ninety percent during the past ten years.

(05年1月六级改错第一题)表示数量多少应该用the number of

(6)The fast-growing population’s demand for food,

they warned, would soon exceed their supply…(04年1月六级改错第二题)这里的their指代population，而人口是一个单数的概念,所以物主代词要用its.