1、it用法總結(高考)it用法總結(高考)一、it 作人稱代詞的用法1.指事物作為人稱代詞，it 可以除人以外的一切事物或動物。如：I dropped my watch and it broke. 我把手表掉在地上摔壞了。Its hard work, but I enjoy it. 工作很辛苦，可是我樂意干。“Where is the dog?”“Its in the bedroom.”“狗在哪?”“在臥室里”。一、it 作人稱代詞的用法1.指事物2.指人it 指人主要用于指不性別不明的嬰兒或用于確認某人的身份。如：Is it a boy or a girl? 是男孩還是女孩?There is

2、a knock on the door. It must be the postman. 有人在敲門，一定是郵遞員。【說明】在答語中，常用來指本人，如說Its me。2.指人3.代替某些代詞代詞it 還可用于代替指示代詞this, that 以及復合不定代詞 something, anything, nothing等。如：“Whats this?”“Its a new machine.” “這是什么?”“是一種新機器”。Nothing is wrong, is it? 沒出什么問題，是嗎?3.代替某些代詞二、it 作非人稱代詞的用法1.基本用法it 作非人稱代詞的用法，主要用于指時間、距離、價

3、值、天氣、氣候及溫度等自然現(xiàn)象。 1. It is Friday today.2. It was very cold last Monday. 3. It is about 8:30 now.4. It is about 25km from Linquan to Fuyang.5. It lies in the south of Anhui.6. It is 40C ! You got a high fever!dateweathertimedistanceplacetemperature 二、it 作非人稱代詞的用法1.基本用法dateweath2.用于某些句型Its time for st

4、h. 該做某事了。Its time to do sth. 該做某事的時候了。Its time for sb to do sth. 某人該干某事了。Its (about / high) time + that-從句. 某人該做某事了。(從句謂語用過去式，有時也用“should+動詞原形”)Its first (second) time + that-從句. 某人第幾次干某事。(從句謂語用現(xiàn)在完成時)Its + 時間段 + since. 自從有一段時間了。Its + 時間段 + before. 過多長的時間才 its=it wasIts + 時間段 + that. 多久了Its + 時間段 + w

5、hen .是在某個時刻 It is time for breakfast.It is time to have breakfast.It is time for us to have breakfast.It is the first time Ive been here.It is two weeks since I saw him Its ten years before I graduated. Its ten years that Ive lived here for It was ten years ago when I graduated 2.用于某些句型It is time fo

6、r breakf三、it用作形式主語1.基本用法當不定式、動名詞、從句等復雜成分用作句子主語時，為保持句子平衡，通常把真正的主語放在句末，而在句首使用形式主語it。如：Its very important to remember this. 記住這一點很重要。Its hard work climbing mountains. 爬山是費勁的事。Its unknown when he will come. 他什么時候來還不知道。三、it用作形式主語1.基本用法2.用作形式主語的的重要句型(1)it 作形式主語替代不定式 構成”It + be + adj. for (of) sb to do sth

7、“ 某人做某事 It is hard for him to make up his mind. 他很難下定決心。 It was foolish of her to say such a thing. 她說那樣的話，真是太蠢了。【Tip】介詞of 與 for 的區(qū)別是：of 用于指某人的性格、屬性、特征等，介詞for表示對象，意為“對來說”2.用作形式主語的的重要句型2) It is V-ed + that It is said (reported, learned) + thatIt is said that he has come to Beijing. It is suggested (

8、ordered, demanded, insisted, commanded) + that 從句中的過去分詞是表示請求，建議，命令等詞時， that后的從句要用虛擬語氣(should + V原形). Should可以省略。譯為“據(jù)建議；有命令”It is suggested that the meeting (should) be put off.2) It is V-ed + that 3) It is a pity (a shame) that That 后的從句一般用虛擬語氣 (should+V原形), should 可以省略. 表示出乎意料，譯為 ”竟然“。沒有這種意義時，則不用虛擬

9、語氣。It is a pity that such a thing (should) happen in your class.3) It is a pity (a shame) that(4)It takes sb. + 時間段 + to do sth. 某人做某事花了時間It takes years to master a new language. 要花多年的時間才能掌握一門新的語言。【Tip】此句型可以有以下多變種變體： It took me an hour to write the letter. =The letter took me an hour (to write). =I

10、took an hour to write the letter. (4)It takes sb. + 時間段 + to do(5)It is up to sb to do sth. 該由某人做某事Its up to you to to make the choice. 得由你來作選擇。(6)it look (seem, appear, happen, occur) that as if似乎It seemed as though he didnt recognize me. 他似乎沒認出我來。It happened that I was out when he called. 他打電話時我碰巧

11、不在家。(7)If it were not for/ If it hadnt been for若不是因為If it were not for their help, we couldnt have got over the difficulties. 要不是他們幫助，這些困難我們不克服不了的。(5)It is up to sb to do sth. 四、it用作形式賓語1.基本用法當不定式、動名詞、從句等復雜成分用作賓語且其后跟有賓語補足語時，通常會在賓語補足語前使用形式賓語，而將真正的賓語移至句末。其基本結構為“動詞+it+賓語補足語+不定式(動名詞或從句)”。如：I find it dif

12、ficult to do the job well. 我發(fā)現(xiàn)做好這件事不容易。I think it best that you should stay here. 我認為你最好住這兒。We think it no use complaining. 我們認為抱怨是沒有用的。四、it用作形式賓語1.基本用法2. 用作形式賓語的幾個特殊結構(1)動詞+ it + that-從句。如：I like it that you came. 你來了，我很高興。I take it (that) he will come on time. 我認為他會準時來的。You can put it that it was

13、arranged before. 你可以說這是以前安排的。Rumor has it that the defence minister will soon resign. 據(jù)傳聞，國防部長不久就要辭職。【說明】能用于此結構的動詞不多，常見的有have, take, put, like 等。it用法總結(高考)(2)動詞 + it + when (if)-從句。如：I dislike it when you whistle. 我不愛聽你吹口哨。We really appreciate it when she offered to help. 她來幫忙了，我們十分感激。Id prefer it i

14、f I didnt have to do so much work. 要是我不必做那么多工作，好就太好了。【說明】能用于此結構的動詞不多，常見的有enjoy, hate, love, like, dislike, appreciate, prefer 等。(2)動詞 + it + when (if)-從句。如：(3)動詞 + prep + it + that-從句。如：See to it that youre not late again. 注意千萬不要再遲到。Look to it that this doesnt happen again. 注意不要再發(fā)生這種事。You may rely o

15、n it that hell come to meet you. 你放心，他會來接你的。I cant answer for it that he will come. 我不能保證他會來。【說明】能用于此結構的動詞不多，常見的有see to, look to, insist on, stick to, depend on, answer for 等。(3)動詞 + prep + it + that-從句。如(4)動詞 + it + 介詞短語+ that-從句。如：I owe it to you that I am still alive. 多虧有你我才仍然活著。I took it for gra

16、nted that he would help us. 我認為他會幫助我們的。【說明】能用于此結構的動詞不多，常見的有take it for granted, bring it to sbs attention, owe it to sb 等。(4)動詞 + it + 介詞短語+ that-從句。如：五、用于強調(diào)句型中1) It + be+被強調(diào)部分 + that/who (a person) 從句I met Tom in the park yesterday.1) It was I who met Tom in the park yesterday.2) It was Tom who I m

17、et in the park yesterday.3) It was in the park that I met Tom yesterday.4) It was yesterday that I met Tom in the park.五、用于強調(diào)句型中1) It + be+被強調(diào)部分 + th2) It is not until + 被強調(diào)的部分+ that 該句型也是強調(diào)句型，主要用于強調(diào)時間狀語，譯成“直到才”，可以說是not until 的強調(diào)形式。It was not until she took off her dark glasses that I realized she w

18、as a famous film star.= Not until she took off her dark classes did I realize she was a famous film star.= I didnt realize she was a famous film star until she took off her dark glasses.2) It is not until + 被強調(diào)的部分+ t六、it 常用的固定搭配1. make it1) 在口語當中相當于succeed, 表示: 成功、做到、說定、趕上、及時到達 如: Its hard to make i

19、t to the top in show business.2) 在口語中相當于fix the date for, 表示“約定好時間” 如: Shall we meet next week?OK. We just make it next Saturday.六、it 常用的固定搭配1. make it2. take it/things easy 相當于Dont worry. 用來勸告別人, 表示“不要慌, 別擔心, ”Take it easy！He will do it well.3. It all depends/that all depends 在口語中, 相當于it hasnt been

20、 decided yet, 表示“那得看情況, 還沒有定下來”Are you going to the countryside for holiday?It/That all depends.2. take it/things easy 4. Its up to sb. 在口語中, 相當于its decided by sb. 表示“由決定, 由負責, 取決于” Shall we go out for dinner？ Its up to you.4. Its up to sb. Its time后的從句用 虛擬語氣一、基本用法從句謂語通常用過去式表示現(xiàn)在或?qū)恚袝r也用過去進行時或“should+動詞原形”(should不能省略)，其意為“(早)該干某事了”：I thinkIts timeyou went to bed.我想你該睡覺了。Its timewe went were going, should go.我們該走了。Im getting tired. Its time we went home.我累了，我們該回家了。I th