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专四必备语法(十三)

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小编摘要:熟悉熟悉语法,下笔做题不惑

十三、复合句——形容词性(定语)从句


 1.尤其要注意whose的用法

whose在从句中做定语,修饰名词。所以,如果关系代词后面紧接的是名词,且关系代词又不在从句中做主语或宾语,那么,这个关系代词就应该是whose。如:


 2.介词 + which的用法

如果从句中主宾成分齐全,考生便可考虑关系代词是否在从句中做状语,而状语通常用介词短语充当,于是可以得知,关系代词前面应有介词,再分析所给的选项,根据与名词的搭配作出正确选择。如:

We are not conscious of the extent to which work provides thepsychological satisfaction that can make the difference between a full and anempty life.


3.as 与which用作关系代词的区别

 (1)as与the same, such, so, as等关联使用。如:As the forest goes, so goes itsanimal life.

(2)as和which都可以引导非限定性定语从句,但as在句中的位置比较灵活,可出现在句首、句中、句末,而which只能出现在句末,尤其是当先行词是整个句子时。如:

As is true in all institutions, juries are capable of makingmistakes.

As is generally accepted, economic growth is determined by thesmooth development of production.

常见的这类结构有:ashas been said before, as has been mentioned above, as can be imagined, as isknown to all, as has been announced, as can be seen from these figures, asmight/could be expected, as is often the case, as has been pointed out, asoften happens, as will be shown等。


 4.关系代词that与which用于引导定语从句的区别

(1)如果关系代词在从句中做宾语,用that, which都可以,而且可以省略;

(2)先行词是不定代词anything, nothing, little, all, everything时,关系代词用that;

(3)先行词由形容词最高级或序数词修饰或由next,last, only, very修饰时,用that;

(4)非限定性定语从句只能用which引导;

(5)关系代词前面如果有介词,只能用which。


 5.but做关系代词,用于否定句,相当于who…not,that…not

这个结构的特点是主句中常有否定词或含有否定意义的词。如:

There are few teachers but know how to use a computer.

There is no complicated problem but can be solved by a computer.

3
2012-06-13 07:55 编辑:wjy2005tom
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