托福考试辅导:语法讲解(3)

摘要:托福考试辅导:语法讲解(3)

考试点二 their等物主代词



1.物主代词是普遍的名词限定词, 之后既可接可数名词的单复数(his pen, his pens)又可配不可数名词(his time), 但不能与别的的限定词另外出現(一部分数词以外), 比如:不能说no my car, my no car,可是可以说 My two red cars

2.英语中很多习惯用法在表明特指时都用物主代词而不用the, 为了更突显隶属关联,这在TOEFL中是一个常出的点

比如:Manufacutrers of consumer goods often change the styles of their products.

这儿用their 而不用 the

练习题:

(1)

A good exercise program helps teach people to avoid the habits that might shorten the lives.

应改为: their

解释: 定冠词the代指不清, 用物主代词their作名词lives的限定语更符合英语习惯性, 还可突显lives 与people中间的隶属关联

(2)

A liquid is similar to a gas because has molecules are not fixed to each other in any specific way.

应改为: its

解释: has是形容词, 不可以装饰名词, 且与从句的宾语矛盾, 依句意改为物主代词its作molecules的限定语

考试点三 只接复数名词的限定词

a (large /small /great /considerable /remarkable) number of, a variety of, a set of, a few, 等表明数的固定不动短语以后一直接复数名词

练习题:

(1)

In mathematical terms, modern algebra is set of objects with rules for connecting or relating those objects.

应改为: is a set

解释: a set of是固定不动短语, 表明一套、一组, 后边接可数名词的复数, 与题中objects符合

(2)

At birth, an infant exhibits a remarkable number of motor response.

应改为: responses

解释: 语句a number of 后边规定接可数名词的复数, number前能加一些修饰词如great, considerable, remarkable, small 等表明a lot of 或 a few

留意 “the number of” 和 “a number of”的差别

The number of boys in Class Five is 25. (五班男孩儿的数量是25,后边谓语动词用奇数)

A small number of families are able to afford an apartment. (极少数家中可以买起一套住宅, )

雅思考试托福备考toefl共享托福机经




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