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900字范文 > 备战届高考英语(通用版)一轮复习专题14  it的用法_高三英语教案

备战届高考英语(通用版)一轮复习专题14  it的用法_高三英语教案

时间:2018-10-19 10:37:39

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专题14 it的用法

【考纲解读】

根据近向几年高考试题来看,it一直是考查的重点,尤其是it, that 和one不同的指代功能。试题注重情景的设置,需要利用特点语言环境中上下文的联系,正确分析结构,理解句意是做此类题目的关键。

命题的热点集中于以下几个方面: .

1. it/that/one用法区别(it主要指代前面提到的同一物;one用来指代前面出现的单数名词,相当于a/an+单数名词,表泛指概念,往往是同类而同一物;that用来替代前面出现的特指的单数可数名词或特指的不可数名词,相当于the+单数/不可数名词)

2. it用在某些动词后,如:enjoy,like,,dislike,resent,hate,don’t mind,be fond of,feel like,see to 之后, 即这些动词后面的宾语从句前要加it代替其后的从句

3. 用于强调句或固定句型(it is/was …when/since/before…)中.

4. 作形式宾语或形式主语(主要代替ving,to do或从句)

5. 考查it 构成的习语,it也常表示抽象的情况,属于虚指. 如:take it easy.

【知识要点】

it的用法

(一)作人称代词

1、it代替前面(或后面)的单数名词或分句等所表示的事物。

e.g. you cannot eat your cake but have it.(it代替前面的cake)

although we cannot see it, there is air all around us. (it代替后面的air)

they say he has left town, but i don’t believe it. (it代替前面they…town分句中的情况)

2、代替有生命但不能或不必分阴阳性的东西(包括婴儿)。

e.g. yesterday we saw a big tree. it was fully twenty metres high. (it代替前面的tree)

the baby cried because it was hungry. (it代替前面的baby)

3、在某些习惯说法中,可以代替人。

e.g. ---- someone is knocking at the door, peter.---- who is it?---- it’s me.

---- who are singing?---- it is the children.

---- the light is still on in the lab. it must be the third-year students doing the experiment.

4、it与one的区别:这两个词都可以代表前面说过的名词,但it用于同名同物的场合;one则用于同名异物的场合。

e.g. ---- do you still have the bicycle?---- no, i have sold it.

---- is this knife yours?---- no. it is xiao zhang’s. mine is the one on the desk.

5、it与that的区别:两词都可代替某一特定名词,但that指同一类,并非同一个。

e.g. the climate of south china is mild(温和的); i like it very much.(it指the climate of south china)

the climate of south china is much better than that of japan.(that指the climate)

(二)作无人称代词

it作无人称代词时,除了句中找不到它所代表的词语外,另一个特点是它后面的内容都是表示天气、时间、距离、度量衡及情况等。

it is fine (rainy, windy, etc.).

it is noon.

it is a half hour’s walk to the factory.

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