one that定语从句

one that定语从句

　　以下就是小编整理的one that定语从句，一起来看看吧！

　　高考中常常考查one和that作为普通代词的区别,还常与it进行区别.主要用法如下：

　　I.it／one ／that三者均可用作代词,指代前面提到的名词.一般说来,it指代同名同物; one与that则指代同名异物.

　　I have lost my umbrella; I'm looking for it.（该句中it就是指前面的my umbrella）

　　I have lost my umbrella; I think I must buy one.（one在该句中表泛指,因为my umbrella已经丢了）

　　The umbrella you bought is cheaper than that I bought.（替代词that在该句中特指“the umbrella I bought”,以区别“the umbrella you bought”）

　　II.one与that虽可用来指代同名异物,但one为泛指,相当于a／an＋名词; that为特指,相当于the ＋名词.所以one所指代的名词的修饰语一般为 a／an ／some ／any; that所指代的名词的修饰语往往是the ／this ／that.

　　A chair made of steel is stronger than one made of wood.（该句中one可以换成a chair）

　　The water in the cup is hotter than that in the pot.（该句中that可以换成 the water）

　　III.one只能代替可数名词单数,代替可数名词复数时用ones; that既可以代替不可数名词也可以代替可数名词单数,代替可数名词复数时用 those.

　　I like this pen more than that one.（one代替可数名词单数pen）

　　There were a few young people and some older ones in the house.（ones代替可数名词复数people）

　　Mary's handwriting is far better than that of Peter.（that代替不可数名词 handwriting）

　　These pictures are more beautiful than those.（those代替可数名词复数 pictures）

　　IV.one既可代替事物,也可代替人,that只能代替事物而不能代替人.有时可以用the one或the ones代替that或those.

　　The one ／That on the table is mine.（该句中The one代替事物,并且也可以用That）

　　He is the teacher,the one who is loved by the students.（该句中the one代替人,不能用that）

　　He advised the farmers to choose the best seed-heads,the ones ／those that had the best color.（该句中the ones代替事物,并且也可以用those）

　　V.one一般有前置修饰语,有时也可有后置修饰语或不用修饰语.而 that不能有前置修饰语,但可有后置修饰语.

　　Cook was a strict but good captain,one who took good care of his sailors.

　　The water in the well is cleaner than that in the river.

　　VI.it可以替代句中的不定式或从句等,充当形式主语或形式宾语.one与that均无此用法.

　　It is known to everybody that the moon travels around the earth once every month.

　　I found it hard to get on with her.

　　VII.it与that均可以替代上文全句的内容或部分内容,而one ／ones则不可以.

　　附：定语从句

　　定语用来限定、修饰名词或代词的.，是对名词或代词起修饰、限定作用的词、短语(动词不定式短语、动名词短语和分词短语)或句子，汉语中常用的表示。主要由形容词担任，此外，名词，代词，数词，分词，副词，不定式以及介词短语也可以来担任，也可以由一个句子来担任。单词作定语时通常放在它所修饰的词之前，作前置定语。短语和从句作定语时则放在所修饰的词之后，作后置定语。

　　定语从句是指在一个句子中作定语的句子，定语从句要放在所修饰的词后。

　　如：1) The man who lives next to us is a policeman.

　　2) You must do everything that I do.

　　上面两句中的man和everything是定语从句所修饰的词，叫先行词，定语从句放在先行词的后面。

　　引导定语从句的词有关系代词that, which, who(宾格who, 所有格whose)和关系副词where, when、why

　　关系词常有三个作用：1、引导定语从句 2、代替先行词 3、在定语从句中担当一个成分

　　希望同学们能够认真阅读定语从句知识点：定语的理解，努力提高自己的学习成绩。

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