It's time…用法归纳

It's time…用法归纳

It's time…句型是中学英语里使用频率较高的句型，其意为“该是……的时候了”。用法灵活多变，也是大家以掌握的句型。现就其有关句式归纳如下：

⑴ It's time for + n.“该是（干）……的时候了。”例：

Boys and girl, It's time for class.

同学们，该上课了。

⑵ It's time + (for sb.) to do sth. .表示“该是（某人）干……的时候了。”例：

It's time for you to clean the classroom.

该是你打扫教室的时候了。

It's time to go to school.

该去上学了。

⑶ It's time + that clause 时，that可省略，time可由high,about修饰，从句中的谓语动词有两种形式，或者用动词的过去式(be用were)；或者用shoud + 动词原形（should不能省略)。此句型为虚拟语气句型，表示“现在某人该做某事了”。含有该事早该去做而未做，现在去做似乎都为时已晚的意思。例：

It's time （that）we went to bed.

我们该去睡觉了。

It's high time that the article were published.

发表这篇文章是适时的。

It's time you should do cleaning.

你该去打扫卫生了。

4) It's + the+序数词+ time+ that clause.也表示某人第几次做某事。例：

It is my first time that I've even written letters.

这是我第一次用写信。

it的用法归纳

?Never be afraid of grammar ?Collect some examples; ?Watch them very carefully; ?Find out something in common; ?Try to use the rules ---- practise. it用法完全归纳 一、it 作人称代词的用法 1.指事物 作为人称代词，it 可以除人以外的一切事物或动物。如： I dropped my watch and it broke. 我把手表掉在地上摔坏了。 It’s hard work, but I enjoy it. 工作很辛苦，可是我乐意干。 “Where is the dog?”“It’s in the bedroom. ”“狗在哪?”“在卧室里”。 2.指人 it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如： Is it a boy or a girl? 是男孩还是女孩? There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。 【说明】在答语中，常用来指本人，如说It’s me。

3.代替某些代词 代词it 还可用于代替指示代词this, that 以及复合不定代词something, anything, nothing等。如： “What’s this?”“It’s a new machine. ”“这是什么?”“是一种新机器”。 Nothing is wrong, is it? 没出什么问题，是吗? 二、it 作非人称代词的用法 1.基本用法 it 作非人称代词的用法，主要用于指时间、距离、价值、天气、气候及温度等自然现象。如： It’s too late to go there now. 现在去那儿已经太迟了。 It rained all day yesterday. 昨天下了一天的雨。 It can get very hot here. 这里有时会很热。 2.用于某些句型 It’s time for sth. 该做某事了。 It’s time to do sth. 该做某事的时候了。 It’s time for sb to do sth. 某人该干某事了。 It’s (about / high) time + that-从句. 某人该做某事了。(从句谓语用过去式，有时也用“should+动词原形”) It’s first (second) time + that-从句. 某人第几次干某事。(从句谓语用现在完成时)

time的用法总结

一．time的短语 from time to time 有时 on time 准时, in time 及时; all the time 始终,一直; at the same time 同时， ahead of time提前 at no time 绝不 some time一段时间 sometime“在某一时候”。可用来指过去或将来 sometimes (at times, from time to time) “有时，不时” at a time （a time） at one time （once）

at times ( sometimes) in no time （immediately）立刻,马上; have a good/nice time (enjoy oneself) “过的愉快 for the time being “暂时” Many a time/many times 多次 take one’s time从容 kill time消磨时间 【活学活用】选出与画线部分意思相同或相近的选项 1. Jim comes to visit us from time to time. That’s always the happiest time A.on time B. sometime C. at times D. some times

2．At no time _____study though _____ great progress. A. should we give up; we have made B. shouldn’t we give up; we have made C. we should give up; we have made D. we shouldn’t give up; have we made 3.---When shall we visit the Science Museum?” ---_________ next week.” A.Sometime B. Sometimes C. Some time D. Sometimes 答案：1. C2.A 3A 二．time相关从属连词高考常考点 1. every time / each time每次 Every time I call on him, he is out.

-it的用法及强调句型(精心整理)

it的用法及强调句型 it的用法 一、it作指示代词【完成句子】用one，ones，it，that，those填空 (1) — I can't find my watch. —You haven't found ______？If you want to buy a new ______，I suggest you buy ______ made in China. (2) We've got a big cup and two small ______. (3) The weight of an elephant is much greater than ______ of a tiger. (4) The books on the first shelf are easier than ______ on the second shelf. (5) The boy told his story and ______ of the girl upstairs. 【答案】(1) it; one; one (2) ones(3) that (4) those / the ones (5) that / the one 【结论1】 ①指代上文提过的事物时，it指的是同名同物，相当于the＋名词； ②one指的是同名异物，表示单数可数名词相当于a ＋名词；a / an＋形容词＋one等于a / an＋形容词＋名词；复数形式用ones； ③that后面常有后置定语，有特指意义，代替不可数名词或单数可数名词，相当于the＋ 名词； ④复数名词用those，相当于the ones。 【例句观察】— Someone is knocking at the door. Who is it? — It must be Leo. He said he'd come to see me. 【结论2】it指代人时，常指小孩或身份不明的人。 【例句观察】It's too quiet in the room. Everyone just keeps silent. 【结论2】it可用以指代环境或情况。 (6)— What time is it now? — It's half past seven. (7)— It is spring now and it's warm these days. 【结论3】it可用以指代时间、季节、天气或距离。 【注意】it指代时间时，有如下一些句型： (1) It is time for sth. (for sb.)to do sth. / that－从句(should do / did, 必须用虚拟语气) 例：① It's time for lunch. ② It's time for us to clean the house. ③ It's time that we should clean the house. ＝It's time that we cleaned the house. (2) It is / has been ＋some time ＋since－从句(从句用一般过去时) It is 10 years since I graduated from college. (3) It / This/That is the first / second time that－从句(必须使用现在完成时)这是某人 第……次做了某事。 It / This/That was the first / second time that－从句(必须使用过去完成时) 例：①It is the second time that she has visited the Great Wall. ②This was the first time that I had come late to school. (4) It was ＋时间点＋when －从句 例：It was evening when we got home. ＝It was evening in which we got home. (5) It was / will be ＋some time ＋before －从句 例：①过了5年他们才从北大毕业。 It was five years before they finally graduated from Beijing University. ②不久，我们就要从我们学校毕业了。 It won't be long before we graduate from our school. 二、it作形式主语 1.代替主语从句 ①It is clear ( obvious，true，possible certain....) that ..... “清楚（显然，真的，肯定．．．）” ②. It is important ( necessary，right，strange，natural...) that ... that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去，建议记住该句型中的形容词。 It is important that we (should) learn English well.

It的用法及典型句型归纳. 个人总结

It的用法及典型句型归纳 一、人称代词it的最基本用法是作代词，主要指刚提到的事物，想法，以避免重复;也可以指性别不明或性别被认为是不重要的人或动物；未指明但谈话双方都明白的事情或情况。 ①They watched the train until it disappeared in the distance. ②Is this your dog？No, it isn’t. ③I hate it when people talk with a full mouth.． 二、.非人称代词.it有时并不指具体的东西而泛指天气、时间、日期、距离、价值、度量、温度、环境等： It is a lovely day, isn’t it? // It was nearly midnight when she came back. It is April First today. // It is some 3000 kilometers from A to B. It is three dollars. // Today it is 30 degrees centigrade. 三、作形式主语，替代主语从句，动词不定式，或动名词短语 1.作形式主语替代主语从句 ⑴It is clear ( obvious，true，possible，certain....) that ＂┅清楚的（显然的，真的，可能的,肯定的．．．）＂ ⑵It is important ( necessary，right，strange，natural...) that + (should ) do (虚拟语气) ┅是重要的(必要的,对的,奇怪的,自然的┅) ⑶It is said (reported/ learned/believed/thought/known/told/hoped.....) that = sb / sth is said (reported/ believed /thought…) to do( to be doing/ to have done) sth ＂据说（据报道，据悉．．．）＂。 ⑷It is suggested ( advised/ ordered / demanded/ insisted/ commanded... ) that +(should ) do ＂据建议；有命令．． ⑸It is a pity ( a shame /an honour/a good thing/a fact,/a surprise/... ) that that后的从句一般用虚拟语气（should + 动词原形），should可省去．表示出乎意料，常译为＂竟然＂。没有这种意义时，则不用虚拟语气。 小练一下： It is very clear that he’s round and tall like a tree. = It is important that we (learn) English well. It is necessary that he (remember) these words. It is said that he has come to Beijing. = It is reported that another earth satellite has been put into orbit. = It is suggested that the meeting ( put off). It was ordered that we (arrive) there in two hours. It is a pity that such a thing ( happen) in your class. It is a pity that he (be) ill. 2.作形式主语替代不定式 . ⑴It is kind ( of sb. ) to do sth.= sb be kind to do sth.一般都是表示人的特性的形容词。如： bad /brave /careless/ clever /cruel / foolish / good （好心的）/ honest/ kind / lazy / modest/ naughty/ nice（有教养的）/polite/ rude / silly / stupid / wise ，等。 Eg. It is kind of you to give me a hand. = ⑵It is necessary ( for sb. ) to do sth. .不定式的逻辑主语是由for引起。常见的形容词有： Important/ necessary/ natural/ easy / safe / common / normal / hard / difficult / dangerous/ unusual/ rare / impossible / pleasant Eg. It is important for her to come to the party.

it用法归纳

it用法完全归纳 一、it 作人称代词的用法 1. 指事物 作为人称代词，it 可以除人以外的一切事物或动物。如： I dropped my watch and it broke. 我把手表掉在地上摔坏了。 It’s hard work, but I enjoy it. 工作很辛苦，可是我乐意干。 “Where is the dog?” “It’s in the bedroom. ” “狗在哪?”“在卧室里”。 2. 指人 it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如： Is it a boy or a girl? 是男孩还是女孩? There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。 【说明】在答语中，常用来指本人，如说It’s me。 3. 代替某些代词 代词it 还可用于代替指示代词this, that 以及复合不定代词something, anything, nothing等。如： “What’s this?” “It’s a new machine. ” “这是什么?”“是一种新机器”。 Nothing is wrong, is it? 没出什么问题，是吗? 二、it 作非人称代词的用法 1. 基本用法 it 作非人称代词的用法，主要用于指时间、距离、价值、天气、气候及温度等自然现象。如： It’s too late to go there now. 现在去那儿已经太迟了。 It rained all day yesterday. 昨天下了一天的雨。 It can get very hot here. 这里有时会很热。 2. 用于某些句型 It’s time for sth. 该做某事了。 It’s time to do sth. 该做某事的时候了。 It’s time for sb to do sth. 某人该干某事了。

forthefirsttime等用法归纳

f o r t h e f i r s t t i m e等 用法归纳 -标准化文件发布号：（9556-EUATWK-MWUB-WUNN-INNUL-DDQTY-KII

总结： 1. for the first time 介词短语，作状语， 时态灵活。 2. the first time 用作连词，引导状语从句。 3. It’s the first time that sb have / has done.从句用 完成时态。 第一种用法：for the first time 介词短语，作状语，时态灵 活，例句。 1. I drank beer for the first time. （一般过去时） 2. We met for the first time. 3. He told a lie for the first time. 4.The two girl students talked for the first time at the beginning of the term． 5. People who go to a formal Western dinner party for the first time may be surprised by table manners in Western culture. （一般现在时） 6. I'm in Shanghai for the first time. 7. He is singing in public for the first time. (现在进行时) 1

8. For the first time I am looking in your eyes. 9. For the first time I'm seeing who you are. 10. Joe is an American who has come to Britain for the first time. (现 在完成时) 11. As if he has discovered something for the first time. 第二种用法：the first time 用作连词，引导状语从句，例句。 1. The first time he told a lie, he felt quite nervous. 2. I thought her nice and honest the first time I met her. 3. The first time I drank beer, I fell in love with it. 4. The first time I met her, she left a deep impression on me. 5. I knew we would be good friends the first time I met him． 第三种用法：It’s the first time that sb have / has done sth. 例句。 1.It’s the first time that he has been in Shanghai. 2.It’s the first time that he has cheated in the exam. 3.It’s the first time that we have met such kind of people. 2

高考重点：It的用法以及含有it的句型

高考重点：It的用法以及含有it的句型 英语中it 一词结构看似简单，但其词义广泛，使用范围很广，常令一些初学者感到头痛。It用法及其句型和固定搭配，是英语语法的重点、难点，又是近几年考试的热点,在高考中也是重现率较高的语言点，其考查方式多通过“单项填空”进行，偶尔也出现在“短文改错”和“完形填空”中。因此在复习中应给予足够的重视。下面笔者就it的用法简单归纳如下。 一、代替上文中提到过的人或事物。指代人时，一般用于小孩或身份不十分明朗的人。 1) －Who is the baby? －It‘s my teacher’s son． 2) －Who is that gentleman? －It's my friend Tom．He(不可用It) wants to see you． 不定代词one 指代前文提到的同类事物之一，而it 特指上文中提到的同一事物。试对比：This pair of shoes is small. May I have another one？（泛指的另一双） 这又鞋子太小了，再拿一双给我看看好吗 My pen is missing.Ican’td find it. 我的钢笔丢了找不到了(it指my pen) 二. it 作为无人称动词的主语，表示天气，时间，距离，环境情况等等。这时的it 不指某个具体的东西。没有明确的含义。译成汉语可不必译出来。如 1).It‘s half an hour’s walk from here to our school． 从这儿到我们学校是步行一个小时的路程 2) It‘s nice and warm here． 这里非常暖和 3) But it's two o'clock now, and it's time for us to go to school． 两点了该是上学的时间了 4) It’s quite close in the room . Let’s open the window for a while。 房间里太闷，把窗子打开一会儿吧。 三.“It”可以代替指示代记词This ,that . 例：---Whose dictionary is that ?---It is mine 四,用作形式主语或形式宾语。 1. 当作主语的不定式、－ing短语或从句太长时，往往用it作形式主语，而将真正的主语移至句末， 以避免句子头重脚轻。it作形式主语的常见句型： ★it替代动词不定式作主语的常见句型为: 1) It is necessary /important /possible/easy…..for sb to do…. 如:It is necessany to learn a foreign lanuage.学一门外语是有必要的。 It is kind /foolish/polite/brave/careless…of sb to do.常用形容词有:clever/wise/bright/silly/foolish/stupid/kind/cruel/right/wrong等如: It is kind of you to help me=Y ou are kind to help me.:谢谢你帮助我. 3)It is up to sb to do sth.该由某人做某事如:It is up to you to decide.由你来决定. 4)It is (not)like sb to do sth.做某事是(不)是某人的行为. 如:It was not like you to have said such rude words. 说出这样粗鲁的话不像你的行为.

it的用法及句型总结

It的用法 一、Tell the functions for “it” in each sentence: 1、---What’s the weather together ---It is fine. 2. It is hard to communicate with him. 3. I find it hard to communicate with him. 4. It is Li that who cleaned the classroom. 5. It is a book. 二、It 用法归纳 1，指代it （1）.用作人称代词：指代物、整个句子 （2）用作非人称代词 2，形式it：（1）作形式主语（2）作形式宾语 3，强调it 4，特殊句型 5.在答语中指代this/that： 1).--- Whose book is that ---It’s mine. 三、特别注意： it, one和that作替代词的用法及区别 1. it代替前面提到的同一事物,该事物既可以是可数名词也可以是不可数名词。 (特指，指代单数，指代物，同名同物) Can I borrow your pen—Sorry， I’m using it.

2. one代替前面提到的同类事物中的一个。该事物只能是可数名词,前面可以有冠词,也可以被this、that或形容词修饰,其后也可以有定语。（泛指，指代可数名词，指代人或物，同名异物） I have a bike. Do you have one Eg: (1).I bought a dictionary three years ago and I am still using______ now. (2) I bought a dictionary three years ago but I am going to buy a new _______soon. (3). that代替前面提到的同类事物中特指的一个。该事物既可以是可数名词也可以是不可数名词,必须要有后置定语,但不可以有前置修饰语。（特指，指代单数或不可数，指代物，后面有定语） The coffee produced in Brazil is more famous than __________in Mexico. 四：形式主语、宾语、强调句及其他

It's time…用法归纳

It's time…用法归纳 It's time…句型是中学英语里使用频率较高的句型，其意为“该是……的时候了”。用法灵活多变，也是大家以掌握的句型。现就其有关句式归纳如下： ⑴ It's time for + n.“该是（干）……的时候了。”例： Boys and girl, It's time for class. 同学们，该上课了。 ⑵ It's time + (for sb.) to do sth. .表示“该是（某人）干……的时候了。”例： It's time for you to clean the classroom. 该是你打扫教室的时候了。 It's time to go to school. 该去上学了。 ⑶ It's time + that clause 时，that可省略，time可由high,about修饰，从句中的谓语动词有两种形式，或者用动词的过去式(be用were)；或者用shoud + 动词原形（should不能省略)。此句型为虚拟语气句型，表示“现在某人该做某事了”。含有该事早该去做而未做，现在去做似乎都为时已晚的意思。例： It's time （that）we went to bed. 我们该去睡觉了。 It's high time that the article were published. 发表这篇文章是适时的。 It's time you should do cleaning. 你该去打扫卫生了。 4) It's + the+序数词+ time+ that clause.也表示某人第几次做某事。例： It is my first time that I've even written letters. 这是我第一次用写信。

It的用法总结

I t的用法总结文档编制序号：[KKIDT-LLE0828-LLETD298-POI08]

It 的用法总结 一. 代词: 1)指代上文 2)指代this/that 3)指代未知性别的婴儿或孩子或身份不明的人 4）指代时间/地点/天气/温度/距离/环境 gets dark very early in the winter. will you call it if it’s a boy love spring---It’s a wonderful time of the year. ’s less than 100 kilometres from here to Jinan. the factory closes, it will mean 500 people losing their jobs. ’s this It’s a cat. has snowed much this year. (1)The book in your bag is very interesting. Can I borrow (2) The book in your bag is more interesting than ______ on the desk. (3) The weather here is much colder than____ in Nanjing. (4) The books are free. You can take____ free of charge. (5) The books in the bag are better than _____ on the desk.

time用法知多少

一. 句型 1. It’s time for sth . 或It’s time ( for sb . ) to do sth . 意为：该是……的时候了。例如： It’s time for dinner . 该是吃晚餐的时候了。 It’s time for children to go to bed . 是小孩睡觉的时候了。 2. It’s ( high ) time ( that ) sb . did sth . 意为：该是……的时候了。该句型中的that 从句需要用虚拟语气，谓语动词常用过去式。例如：It’s high time that we stated . 我们该出发了。 It’s time that we devoted ourselves to our country . 该是我们报效祖国的时候啦。 3. This is the time when sb . should do sth . 或The time has come when sb . should do sth . 这两个句型也用来表示“该是……的时候了”，when 引导的定语从句用陈述语气或“sho uld + 动词原形”的形式。例如：This is the time when you should get u p .是你该起床的时候了。 The time has come when we must part from each other .该是我们必须道别的时候了。 提示：以上几个句型都可以表示“该是……的时候了”，形式虽然不同，却可以互相换用。如“该上学了”，可用下面几种句型来表达： It’s time for school . It’s time for us to go to sch ool . It’s ( high ) time that we went to school . This is the time when we should go to school .

高中英语语法权威解析二---“It”用法及其句型和固定搭配讲解(附练习题)

第二章“It”用法及其句型和固定搭配讲解 "It" 用法及其句型和固定搭配，是高中英语语法的重点、难点，又是近几年高考的热点，因此应给予充分的重视，现将it用法归纳如下： 一、It用作实词 表达以下概念:指代前文提到的事物，前文中的this, that；替代前文中的内容；指代一位性别不明的小孩或未知的人；指代未指明但谈话双方都知道的那件事；指代时间、天气、气候、距离等自然现象…… 二、It用作形式主语 替代作主语的从句、动词不定式、动名词，而把真正作主语的从句、动词不定式、动名词置于句尾。 It 作形式主语的常见句型： 1. 代作主语的动词不定式，其句型为 (1) It be adj. (for sb.) to do sth. 此处adj. 通常为描述事件的形容词：easy, difficult, hard, necessary, unnecessary, possible, impossible, likely, unlikely, right, wrong, important, unimportant, legal, illegal, well-mannered, ill-mannered, polite, impolite, clear, obvious, certain, suitable, proper, fit, useful, useless, dangerous… 例It is illegal (for a teenager) to drive a car without a license. (2) It be adj. of sb. to do sth. 此处adj. 通常为描述人的形容词：kind, unkind, nice, rude, cruel, considerate, thoughtful, thoughtless, careful, careless, silly, foolish, stupid, clever, wise, crazy. 例It's kind of you to help me with the problem. (3) It替代作主语的动名词的常见句型 It's no good/use doing… It's (well)worth doing… It's (well)worth one's while doing/to do… It's (well)worth while doing/ to do 例It's no use crying over spilt milk. 2. It替代作主语的从句常见句型 (1) It is + noun +从句 例It is no secret that the president wants to have a second term at office. (2) It is adj. +clause It's surprising that…(should)………竟然…… It's a pity/shame that…(should)………竟然…… 例It's important that you should apologize to her for your rudeness.(=It's of much importance that you should apologize to her for your rudeness.) (3) It verb sb. + clause= It is v-ing + clause It+surprise/delight/interest/disappoint/worry/disturb/annoy/amaze /bother/concern/frighten/please/anger sb. that… 例It worried me that she drove so fast.(= It was worrying that she drove so fast.) (4) It verb (to sb.) that…= sb/sth verb to do (verb = appear, seem, come about, emerge, follow, chance, happen, occur, transpire, turn out , work out) 例It (so) happened/chanced that they were out.(= They happened/chanced to be out.) (5) It is v-ed that…=sb/sth is to do (verb=say, report, think, believe, hope, expect, agree, accept, decide, determine, intend, plan, understand, know） 例It is said that the couple have gotten divorced.(=The couple are said to have gotten divorced.) (6) It is v-ed that … (should)… (verb=demand, request, require, order, suggest, advise, recommend 例It is suggested that they should begin with the third question. 三、It作主语的句型 1. It takes sb. …to do…(=sb takes…to do…)某人用多长时间做某事 例It took the men a week to mend our roof.(= The men took a week to mend our roof.) 2. It's (just)(un)like sb. to do…（不）像某人做某事的风格 例It was (just) like him to think of helping us.

it用法归纳(高中英语)

“it” 两项重点用法Mar 4. 2011 这两项重点用法指的是强调句和it做形式成分。 一.强调句: 一）陈述句： It + is / was + 被强调部分+ that / who … ( 强调人时可用who ) I met Tom in the street yesterday. 针对各个划线部分变强调句： 1) It was I that met Tom in the street yesterday. 2) It was Tom that I met in the street yesterday. 3) It was in the street that I met Tom yesterday. 4) It was yesterday that I met Tom in the street. 二）一般疑问句： 1) Was it I that met Tom in the street yesterday? 2) Was it Tom that I met in the street yesterday? 3) Was it in the street that I met Tom yesterday? 4) Was it yesterday that I met Tom in the street? 三）特殊疑问句： 1) Who was it that met Tom in the street yesterday? 2) Who was it that I met in the street yesterday? 3) Where was it that I met Tom yesterday? 4) When was it that I met Tom in the street? 四）特殊疑问句作宾语从句： I forgot… 1) I forgot who it was that met Tom in the street yesterday. 2) I forgot who it was that I met in the street yesterday. 3) I forgot where it was that I met Tom yesterday. 4) I forgot when it was that I met Tom in the street. 结论：特殊疑问句作宾语从句时，主谓词序正常。 五）判断强调句的方法： “It is / was … that…” 这个框架拿掉以后，句子仍然成立。 高考题： I just wonder ___ that makes him so excited. A. why it does B. what he does C. how it is D. what it is （D ） 难点： I did not go to bed until midnight. It was not until midnight that I went to bed. 二. It 做形式成分：形式宾语和形式主语

by the time用法

By the time 用法详解 ?by the time意为“到……时候（为止）”，是一个介词短语，在句中经常起连词作用，引导时间状语从句。它的主要用法如下： ? 1. 如果从句中的谓语动词是一般过去时，那么主句中的谓语动词通常用过去完成时，表示“截止到从句动作发生时，主句动作已经完成，即过去的过去”。例如：By the time he returned home，the rain had stopped. ?By the time I got to the station，the train had already gone。 ? 2. 如果从句中的谓语动词为一般现在时/或现在完成时（表示将来），那么主句中的谓语动词常为将来完成时，表示“截止到将来某一时间为止，主句动作将已经完成”。 By the time you get back，I shall have finished the work. ?By the time I graduate next year, I will have lived here for 5 years. ?By the time of next term , we will have learned 3000 words. ? 3. 如果主句动作不强调已经完成，只是说明某个时候的状况，（主句是be的系表形式或者是表示像know, find, believe等表示认知的持续性动词，则往往用一般时态，不用完成时态。）此时主句不用完成时，而应根据实际需要选用适当的时态，此时by the time相当于when。例如： ?He was out of breath by the time he reached the top. By the time the bus came，so many people were waiting that it was a free fight to get on it. 公共汽车来的时候，等车的人很多，成了一场挤车的混战。 ?By the time he went abroad, he was fourteen.出国那年他14岁。 ?By the time the war was over , death and suffering were to be seen everywhere. ?在战争结束的时候，到处可见死亡和饥饿。这里没有“死亡和饥饿”已经完成的意思，只是描述当时这个时间点的状况。所以用过去时。 ?巩固练习： ? 1. （2005天津卷）By the time Jane gets home，her aunt _____for London to attend a meeting. A. will leave B. leaves ? C. will have left D. left ? 2. By the time you have finished this book, your meal ___ cold.(2012四川卷) ? A. gets B. has got C. will get D. is getting ? 3. （2009北京卷）When I talked with my grandma on the phone，she sounded weak，but by the time we _____ up，her voice had been full of life. A. were hanging B. had hung ? C. hung D. would hang ? 4. ―Did you see Xiao Li at the party？ ―No，_____by the time I arrived. A. she’d left B. she’s left ? C. she was left D. she must leave 5. By the time I saw the angry expression on his face，I_____ what I had to face. A. knew B. have known ? C. would know D. had known 6.（2008四川卷）The telephone_____，but by the time I got indoors，it stopped. A. had rung B. was ringing C. rings D. has rung ?7.（2008山东卷）By the time he realizes he _____into a trap，it’ll be too late for him to do anything about it. A. walks B. walked C. has walked D. had walked