it和one作代词的区别

由于句法结构的需要，常用it作形式主语，而把真正的主语放后置。1．形式主语：不定式、动名词以及主语从句作主语时，为避免“头重脚轻”，要将真正的主语后置。

It seemed impossible (for him) to get back home （不定式作主语）

It was worthwhile searching for his "roots" （动名词作主语）

It was obvious that his ancestor taught his younger generation little of his own language （主语从句作主语）

1) It is / was difficult (easy, hard, important, necessary, useful, fit, possible, a pity, a Pleasure…) (for sb) to do sth

2) It is / was kind (nice, wise, clever…) (of sb) to do sth= Sb is / was angry ( ashamed, delighted, disappointed, excited, glad, happy, pleased, proud, sorry, surprised, thankful…) to do sth

3) It is better (interesting, tiring, enjoyable, funny, fun, a bore, a waste of time…) doing sth

4) It is clear (plain, true, certain, sure, obvious…) + that clause + 陈述语气

5) It is important ( necessary, strange, a pity…) + that clause + (should ) do

6) It is a suggestion (my wish, 及与disco动词有关的名词) + that clause +(should) do

7) It is ordered (及与disco动词有关的动词的被动语态) + that clause +(should) do

8) It is high / very time that we should have lunch / had lunch here

It is the first / last time that we have had lunch here (just)

It is the third time that we shall have lunch here (in a moment)2．形式宾语：当不定式、动名词、that 从句作宾语，又有自己的宾语补语时，要用it 作形式宾语，而把真正的宾语后置。如：

Marx found it important to study the situation in Russia

The fisherman made it a rule that he never cast his net more than four times a day

The ancient people took it for granted that the earth was flat

We think it necessary reading aloud every morning to improve our English

能够用于形式宾语句型的动词有think, make, find, consider, feel, take等。

it可以替代the room，cleans up the room的中文意思是:打扫这个房间。如果上下文交代清楚了，这样可以用代词it代替the room，cleans up it的意思与cleans up the room等同。

it作代词如何使用：

1it用来替代前面提到的同一事物时,被替代的名词可以是可数名词,也可以是不可数名词例如:

1)We are studying in a school with trees all around it(it替代可数名词school)

2)-Have you still kept your old furniture

-No,I have sold it(it替代不可数名词furniture)

2it可以替代英语句式中的不定式(短语)、动名词(短语)或从句,在句中作形式主语或形式宾语例如:

1)It is a great surprise to meet you here(It替代不定式短语to meet you here)

2)I think it is no good parents doing anything for their children(it替代动名词的复合结构parents doing anything for短语)

3)We found it impossible

one作代词的用法如下，

1one替代由可数名词所表示的一类人或事物中的任何一个,即泛指中的强调这时,替代词one前面不可加任何限定词例如:

1)I hope there are enough glasses for each guest to have one

2)A color TV set made in Japan costs more than one made in China

3)-Who can lend me a Chinese-English dictionary

-I have one

2one用来替代特指的同一类人或事物的可数名词时,其前面必须加上限定词(如a,the, this, that等)、物主代词或形容词加以修饰例如:

1)If you don't like this blue coat, you can buy a black one

2)I don't want the book on the shelf, I want this one on the desk

3)Your old bike is white, while my old one is black

3one在定语从句中作先行词替代特指的同一类人或事物时,其前面必须用定冠词the限定,但不可用that替换如果先行词为"one of",其关系代词在定语从句中作主语,从句中的谓语动词常用复数形式例如:

1)This farm is the one that we visited last summer(句中the one代替this farm,作先行词,不可用that替代)

2)This is one of the highest buildings that have been built in our city recently

3)Zhang Lei is the very one of the students who has been praised at the meeting

4one的复数形式为ones,作替代词时,只可替代同一类人或事物的复数名词,其前面必须有限定词,如the, some, all等修饰但不能用数词或many修饰例如:

1)Mr Zhang gave the textbooks to the pupils except the ones who had already taken them(句中the ones可用those替代)

2)I don't want to buy these small pears; I want some large ones

3)She wants to buy some new clothes and throw away all her old ones

5one在句中不可替代不可数名词在句中如果出现了同一个不可数名词时,则需要重复前一个名词,或者省略那个名词例如:

1)I prefer black coffee to white (coffee) (white coffee中的coffee可省略也可不省,但不可用one替代coffee)

2)Folk music is the music that I like most(不可用the one替代the music)

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代词one和it的区别

it作代词如何使用： 1it用来替代前面提到的同一事物时,被替代的名词可以是可数名词,也可以是不可数名词例如: 1)We are studying in a school with trees all around it(it替代可数名词school) 2)-Have you still kept your old furniture -No,I have sold it(it替代不可数名词furniture) 2it可以替代英语句式中的不定式(短语)、动名词(短语)或从句,在句中作形式主语或形式宾语例如: 1)It is a great surprise to meet you here(It替代不定式短语to meet you here) 2)I think it is no good parents doing anything for their children(it替代动名词的复合结构parents doing anything for短语) 3)We found it impossible one作代词的用法如下， 1one替代由可数名词所表示的一类人或事物中的任何一个,即泛指中的强调这时,替代词one前面不可加任何限定词例如: 1)I hope there are enough glasses for each guest to have one 2)A color TV set made in Japan costs more than one made in China 3)-Who can lend me a Chinese-English dictionary -I have one 2one用来替代特指的同一类人或事物的可数名词时,其前面必须加上限定词(如a,the, this, that等)、物主代词或形容词加以修饰例如: 1)If you don't like this blue coat, you can buy a black one 2)I don't want the book on the shelf, I want this one on the desk 3)Your old bike is white, while my old one is black 3one在定语从句中作先行词替代特指的同一类人或事物时,其前面必须用定冠词the限定,但不可用that替换如果先行词为"one of",其关系代词在定语从句中作主语,从句中的谓语动词常用复数形式例如: 1)This farm is the one that we visited last summer(句中the one代替this farm,作先行词,不可用that替代) 2)This is one of the highest buildings that have been built in our city recently 3)Zhang Lei is the very one of the students who has been praised at the meeting 4one的复数形式为ones,作替代词时,只可替代同一类人或事物的复数名词,其前面必须有限定词,如the, some, all等修饰但不能用数词或many修饰例如: 1)Mr Zhang gave the textbooks to the pupils except the ones who had already taken them(句中the ones可用those替代) 2)I don't want to buy these small pears; I want some large ones 3)She wants to buy some new clothes and throw away all her old ones 5one在句中不可替代不可数名词在句中如果出现了同一个不可数名词时,则需要重复前一个名词,或者省略那个名词例如: 1)I prefer black coffee to white (coffee) (white coffee中的coffee可省略也可不省,但不可用one替代coffee) 2)Folk music is the music that I like most(不可用the one替代the music)

2 浏览1052017-11-27

“one”和“that”在做代词时有什么区别？

one 指代单数名词,而上句中weather（天气）是不可数名词,所以不能用one代替that that 指代不可数名词或者指代上文中提到的情况that指代的是“同名异物” it 指代单数名词或者不可数名词,指代“同名同物” 1it指前面提到过的问题本身 egI bought a penIt's a good pen 2that特制前面提到的名词,that和被代替的名词并非指同一事物,而是同类事物多用于事物的比较,避免重复 3one用于泛指前面提到过的名词 egYour pen is goodI want to buy one 4that只能代替事物,不能代替人 one可以代替事物,也可以代替人 在口语中it也可以指人 5it可用作无人称代词,指时间,自然现象（天气,气候,明暗等）,距离,量度,价值etc

8 浏览5032019-10-03

it和the one作代词区别

1 it是代指原物，知道性别时不能代指人，不能作定语从句先行词。 the one可以代人，也可以代物，常作定语从句先行词。 2 代物时： one 泛指，it表示特指。one与所指名词为同类，但不是同一个。而it与所指名词为同一个。 I can't find my hat I think I must buy one （不定） 我找不到我的帽子了。我想我该去买一顶。 The hat you bought is bigger than the one I bought （同类但不同个）你买的那顶帽子比我买的大。 I can't find my hat I don't know where I put it （同一物）我找不到我的帽子。我不知道我把它放在哪了。

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it,that,one作代词的区别

可数单数用one替，ones替代复数词。 不定冠词后加one，one前一般有定语。 替代若系本身物，it 替单 they 代复。 比较句中替代词，不可数名词that替。 最高级及序数词后，替代词常常被略去。 复数名词替代词，ones 与 those 均用之， 特指 ones 加定冠，those 之前无冠词。 One(s) 的定语多在前，those 的定语必后置。 是复制的 但这个总结的真的很好

42 浏览27392016-07-25

it one that 作为代词的用法有什么区别

1one, it, that常常用来代替或避免重复某个名词。 例如： ①I'm looking for a flat I'd really like one with a garden ②-Where did you find your watch - I find it in our classroom ③The population of China is larger than that of any other country 2one可指人或物，只替代单数可数名词，复数用ones one是泛指，但有限定修饰语，如the, this, that…修饰就变成了特指。 如：One must do one's duty 3that只指物，不指人，可替代可数名词或不可数名词，具有“特指”性质。指的是同类事物中的另一样东西，即同类异物。如：The library of our school is bigger than that of yours(that代替的是另一个图书馆。) 4．One 和that 在代替可数名词时，如果没有前置定语只有后置定语时， the one 和that可互换。但该名词如有前置定语，则只能用the one,而不能用that。 例如： ①I will take the seat next to the one(=that)by the window我就坐窗口的那个座位旁边。 5．That的复数形式those代替可数名词的复数。可指人或物，一般后面跟修饰语。如： ①Today's cellphones are smaller than those(=the ones)used in the past 6the one(ones)或 that ,those 指代某一名词做定语从句的先行词时，其关系代词which在that之后，which不能省略，而在the one、ones 之后,which可省略。如：Their problem today is somewhat similar to that which they faced many years ago 7代替不可数名词时，应该用that。如：The equipment is different from that 8it代替上文所提到的名词时，是指同类事物中的同一样东西，即同类事物。如： I have lost my pen I'm looking for it 9it和that可代替前面整个句子的意思，而one却不能；that可引导一个限定性定语从句，代替某个先行词（单复数名词均可），it和one则不能；it可代替不定式、动名词或从句，用作形式主语或形式宾语，也可用于强调句型中，而one和that则不能。

24 浏览11212017-05-13

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此题中look作连系动词,一样类型的词还有soundsmelltastefeel；如果选择了it,那就表示look作为了实义动词,那即使单从语法角度说,look后面也还要加上at

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