by the time用法
by the time用法
by the time用法
by the time用法
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"。
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"。
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。
扩展资料：
注意时态的变化：在一般情况下，如果从句的谓语动词用一般过去时，主句的谓语动词用过去完成时；如果从句的谓语动词用一般现在时，主句的谓语动词用将来完成时。
例如：
By the time you came back, I had finished this book.
到你回来时，我已经写完这本书了。
By the time you come here tomorrow, I will have finished this work.
你明天来这儿的时候，我将已经完成此工作了。
by-the-time-的用法
• 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 • ［解析］ 答案为C。 从gets home可知 Jane还未回到家，等到Jane在将来的某个时间 回到家以前，她的aunt将已经赴伦敦参加一个会 议去了，故用将来完成时。
By the time
• by the time意为“到……时候（为止）”相当于 一个连词，引导时间状语从句。它的主要用法：
1. 如果从句谓语动词:一般过去时， 主句中谓语动词:过去完成时， 即过去的过去”。(相当于before)
By the time he was fourteen years old， Einstein had learned advanced mathematics all by himself. 到14岁的时候，爱因斯坦就已经自学完了高等数学。
三、现在分词和过去分词作状语 分词可以分为一般式和完成时 ①一般式doing表示主从动作同时或几乎同时发生 ,doing的动作是由主句的主语所发出 Hearing the news, they all jumped with joy.
②现在分词的完成式having done表示分词的动作发 生在谓语动词动作之前,可以改为一个含有完成时的从句 Having finished his homework, he went out to play football. =After he had finished his homework,…
√
√
√ √
1. Whenever he was asked why he was late for class, he would answer carelessly, always _____ the same thing. A. saying B. said C. to say D. having said 2. ____in the queue for half an hour, the old man suddenly really he had left the cheque in the car. A Waiting B To wait C Having waited D To have waited 3._____ at the cafeteria before, Tina didn’t want to eat there again. 【2013山东】 A. Having eaten B. To eat C. Eat D. Eating 4._____ , the players began the game. A. Having taken our seats B. Taking our seats C. Being taken the seats D. After we ha词be或者是表示像 know, find, believe等表示认知的持续性动 词） 时态一致，此时by the time相当于when。
bythetime和bytheendof的区别
bythetime和bytheendof的区别by the time和by the end of的区别：中文含义及用法不同。
当by the time表示将来的时间，主句用将来完成时，从句用一般现在时来表示将来的动作；by the end of多指时间，常用于完成时态,也可用于将来时态。
一、by the time的中文意思及用法介绍by the time意为到……的时候。
可以表示将来的时间，其主句用将来完成时，从句用一般现在时来表示将来的动作；也可表示过去的时间，其主句用过去完成时，从句用一般过去时。
例句：By the time you get there the meeting will be over.等你到了那里的时候，会议就该结束了。
By the time I arrived on the scene, it was all over.我来到现场时，一切都已结束。
She was tired and out of sorts by the time she arrived home.她回到家里，又累又烦。
By the time we arrived, someone had grabbed all the good seats.我们到达时，所有的好位子都给人占了。
By the time he'd fixed the leak, I was into him for$ 500.他补好漏洞时，我就该付给他500元。
By the time I get home, I'm too tired to do anything active 我到家时累得无法动弹。
By the time we had made landfall the boat looked ten years older!等到我们登陆时，这艘船看似已老了10年！二、by the end of的中文意思及用法介绍by the end of意为在……尽头。
bythetime用法
要点精析ABC
[温馨提示] (1)“by＋表示过去的时间”作状语时，句子谓语
第三板块
一般用过去完成时。
(2)“by＋表示将来的时间”作状语时，句子谓语一般用将来完 成时。
by the end of＋过去时间，主句常用过去完成时。 by the end of＋将来时间，主句常用将来完成时。
①By the time the course ends，
_w_e_'_ll_h_a_v_e_l_e_a_rn_e_d__a lot about Britain. 到这门课程结束时，我们将学到关于英国的很多知 识。 ②By the end of last week，we _h_a_d_r_e_c_ei_v_e_d_over 1，000 text messages. 到上周末我们已收到1 000多条短信。
晨读吧
基础y the time you have finished this book, your
meal________ cold. (北京卷，22)
A．gets
B．has got
C．will get D．is getting
答案 C
晨读吧
基础盘点ABC
必修2 Module 3 Music
晨读暮诵· 常考话题
基础 梳理自测
考点
课堂
课后
归纳讲解 知识巩固 自主提升
上页 下页
第三板块
【教材原文1】By the time it ended, more than 700 people had been killed and 2700 had been injured. 【教材原文2】By the late 1890s, he had moved to Galveston, where he died in 1899, a year before the hurricane struck.
by+时间的 用法
1、“by＋时间"与动作性强的动词连用时，主句多用于完成式。
by后的时间可指现在、过去或将来时间点。
如：By the time he was fourteen year sold，he had learned maths all by himself.I shall have finished it by the time you come back.By the end of the match，they had kicked two goals and we had kicked four。
They must have finished their work by this time。
但是，上述情况中当时间为将来时，主句动作发生在从句动作之后时，主句动词可用一般时态。
如：If you're not better by then, I'll take you to see the doctor。
如果到那时还不好些，我就带你去看病。
Can you finish this by tomorrow? 在明天以前你能做完这件事吗?间或有用进行式的.如：By the end of the first week the head of the department was saying very nice things about me. 第一周末时系主任给我多多美言了几句。
2、“by+时间”与表状态的动词连用多用于一般式。
by后时间可为现在、过去或将来时。
如：By the end of the century the population numbered about four million. 到世纪末人口已经达到四百万左右。
You can borrow my camera, but I must have it back by five o'clock。
我的照像机你可以借去用，但是五点以前一定要还我.By the time that the security guards had realized what was happening，the gang were already inside the bank. 等到保卫人员明白过来发生了什么事时，那一伙强盗已经进了银行。
bythetimeof的用法
bythetimeof的用法
"by the time of"的用法是指在某个特定的时间点之前。
它常常用来描述两个事件之间的时间关系或某个事件在特定时间点之前的状态。
以下是一些例句：
1. By the time of his retirement, he had worked for the company for 30 years.
（在他退休的时候，他在这家公司已经工作了30年。
）
2. By the time of the meeting, I had already finished my presentation. （在会议开始之前，我已经完成了我的演讲。
）
3. By the time of the concert, all the tickets had been sold out.
（到音乐会开始的时候，所有的门票已经卖光了。
）
4. By the time of the wedding, the bride had already chosen her wedding dress.
（到婚礼的时候，新娘已经选好了她的婚纱。
）
5. By the time of his graduation, he had completed his thesis.
（在他毕业的时候，他已经完成了自己的论文。
）
需要注意的是，"by the time of"强调的是某一特定时间点之前的事情发生或完成。
by加时间的用法
by加时间的用法1. by+时间的基本用法by是一个常见的介词，表示“通过某种方式”。
“by+时间”常用来表达在某个时间之前完成某个动作或事件。
举个例子，我们可以说：- I'll finish my work by 6 pm. （我会在下午6点之前完成工作。
）- Please return the book by Friday. （请在周五之前归还这本书。
）这两句话中的by+时间表明了动作的截止时间。
第一句话中是下午6点，第二句话中是周五。
如果我们没能在规定的时间之前完成需要做的事情，就会产生不好的后果。
例如，如果你没能在周五之前归还书籍，你可能会被罚款或者失去借书的权利。
2. by做时间段除了表示截止时间，by+时间还可以表示一个时间段，这时候我们要用复数形式。
举个例子：- I'll be away from home by two weeks. （我会离家出走两周。
）这句话中的by two weeks不是表示在两周之前完成某个动作，而是表示这个时间段内我会离家出走。
类似地，我们还可以说：- She'll be back by two months. （她会在两个月之内回来。
）- They'll finish the project by three years. （他们会在三年内完成这个项目。
）在上面的三个例子中，by+复数时间表示一个时间段，补充说明了动作或事件的持续时间。
3. by与by the timeby the time是by+时间的另一种表达方式，常用来表示到某个时间为止某个动作已经完成了。
举个例子：- By the time you arrive, we'll have finished dinner.（当你到达的时候，我们会已经吃过晚餐了。
）这句话中的by the time you arrive表示到达之前我们已经完成了晚餐。
类似地，我们还可以说：- By the time we get there, the concert will have started. （我们到达那里的时候，音乐会已经开始了。
bythetime的三种用法(一)
bythetime的三种用法(一)Bythetime的三种用法By the time结构•By the time引导的从句表示一个动作或事件发生的时间点•句子主语为普通句时，从句用过去完成时态；主语为否定句或疑问句时，从句用一般过去时态例子：By the time I arrived at the party, everyone had already left. （当我到达派对时，大家已经离开了）By the time与when的区别•By the time表示在某个时间点之前已经发生的事情•when表示两个动作或事件几乎同时发生例子：By the time I woke up, he had already cooked breakfast. （当我醒来时，他已经做好早餐了）By the time还可以表示”到达某个时刻之前“•By the time + 时间状语，从句用将来完成时态•By the time + 点时刻，用一般现在时或一般过去时例子：By the time we finish this project, we will have worked together for two years. （我们完成这个项目时，我们将已经一起工作了两年）By the time在句中的位置•一般情况下，By the time放在句首•也可以放在句中，此时需要用逗号将主句与从句隔开例子：By the time she realized what happened, it was too late to take any action.By the time的其他用法•可以用于表示到达某个时期、年龄等•句子结构为：By the time + 时期/年龄 + 一般将来时态或一般过去时态例子：By the time I turn 30, I hope to have traveled toat least 10 different countries. （到我30岁时，我希望至少去过10个不同的国家）以上是By the time的三种常见用法及相关解释。
过去完成时的例句
过去完成时的例句过去完成时是英语中一种用来表示在过去某个时间点或动作之前已经完成的动作或状态的时态。
在过去完成时句子中，通常会使用动词的过去分词形式，以及辅助动词had。
下面是一些关于过去完成时的例句，帮助读者更好地理解和运用这一时态：1. By the time I arrived at the party, everyone had already left.（当我到达宴会时，每个人都已经离开了。
）2. She had studied French for five years before she moved to Paris.（在她搬到巴黎之前，她已经学了五年法语。
）3. I had never watched a horror movie until last night.（昨晚之前，我从未看过恐怖电影。
）4. They had finished their homework before the teacher entered the classroom.（在老师进入教室之前，他们已经完成了作业。
）5. By the time I woke up, my parents had already gone to work.（当我醒来时，我的父母已经去上班了。
）6. The train had left the station when I arrived.（当我到达时，火车已经离开了车站。
）7. He had lived in London for three years before he moved to New York.（在搬到纽约之前，他已经在伦敦生活了三年。
）8. I had never seen such a beautiful sunset before I visited the beach.（在我去海滩之前，我从未见过如此美丽的日落。
）9. The concert had already started when we arrived at the venue.（当我们到达场地时，音乐会已经开始了。
by的后面加什么时态
by的后面加什么时态
1、by后加过去时间，用于主句是过去完成时；
例如：By the time he was 7,he had learnt English himself.
【释义】到7岁的时候，他就已经自学了英语。
扩展资料
2、by后加现在时间，用于主句是现在完成时；
例如：I have done my homework by the time you come.
【释义】你回来以前我就把我的回家作业做完了。
3、by后加将来时间，且从句事件发生在主句事件之前，主句动词可用一般时态。
例如：Can you reply to me by tomorrow?
【释义】你能在明天之前答复我吗？
You can borrow my bicycle,but I must have it back by seven.
你可以借我的`自行车，但是一定要在7点前还给我。
以上是by解释为“截至”时，后接三种常用时态的一般用法。
by the time 的用法
by the time 的用法
by the time：
1. by the time 用来描述另一个动作发生之前已经完成的动作。
它强调了一系列的动作，表明另一个动作发生在这系列动作的最后。
例如：
By the time we arrived at the theater, the movie had already started.
2. by the time也可以用来表达一个起点，暗示随后发生的事情是你预料到的，说明已经大致知道了某件事会发生。
例如：
I knew by the time that I arrived at school, the bell would have already rung.
3. by the time还可以表示某个与你有关的人或物已经处于某种情况，此时此刻的状态是他自身以及受他影响的一切的结果，或者是受他影响而走向得以实现的结果。
例如：
By the time Joe got off the plane, he was exhausted.
4. by the time还可以描述某个进程的结果。
例如：
By the time I finished the report, it was three in the morning.
5. by the time还可以强调某人正处在一个他准备要做的事情之前，而且他已经处于可以开始做事情的情况之中，而可以开始做事情的机会还没有被耗尽。
例如：
By the time summer comes around, I hope to have finished reading all the books on my list.。
“by+时间”用法【范本模板】
“by+时间”意为“不迟于(=not later than）”;“一到(=as soon as)”;“当某时候到了［=when (the time in dicated ) comes]"；“到…时为止"等。
时间上有过去、现在和将来之别。
主动词本身有动作与状态之分,其时态可为一般式、完成式、进行式或完成进行式。
现分述如下：1、“by＋时间”与动作性强的动词连用时,主句多用于完成式。
by后的时间可指现在、过去或将来时间点。
如:By the time he was fourteen year sold，he had learned maths all by himself。
到14岁的时候，他就已经自学了数学.I shall have finished it by the time you come back. 你回来以前我就把它做完了。
By the end of the match，they had kicked two goals and we had kicked four.比赛结束时，他们踢进了2分我们踢了4分。
They must have finished their work by this time.他们现在一定已经完成工作了.但是,上述情况中当时间为将来时，主句动作发生在从句动作之后时，主句动词可用一般时态.如:If you're not better by then, I’ll take you to see the doctor。
如果到那时还不好些,我就带你去看病。
Can you finish this by tomorrow? 在明天以前你能做完这件事吗?间或有用进行式的。
如：By the end of the first week the head of the department was saying very nice things about me。
“by+时间”用法
之杨若古兰创作“by+时间”意为“不迟于(=not later than)”；“一到(=as soon as)”；“当某时候到了[=when (the time in dicated ) comes]”；“到…时为止”等.时间上有过去、此刻和将来之别.自动词本人有动作与形态之分，其时态可为普通式、完成式、进行式或完成进行式.现分述如下：1、“by＋时间”与动作性强的动词连用时，主句多用于完成式.by后的时间可指此刻、过去或将来时间点.如：By the time he was fourteen year sold，he had learned maths all by himself.到14岁的时候，他就曾经自学了数学.I shall have finished it by the time you come back. 你回来之前我就把它做完了.By the end of the match, they had kicked two goals and we had kicked four.角逐结束时，他们踢进了2分我们踢了4分.They must have finished their work by this time.他们此刻必定曾经完成工作了. 但是，上述情况中当时间为将来时，主句动作发生在从句动作以后时，主句动词可用普通时态.如：If you're not better by then, I'll take you to see the doctor.如果到那时还欠好些，我就带你去看病.Can you finish this by tomorrow? 在明天之前你能做完这件事吗？间或有效进行式的.如：By the end of the first week the head of the department was saying very nice things about me. 第一周末时系主任给我多多美言了几句.2、“by+时间”与表形态的动词连用多用于普通式.by后时间可为此刻、过去或将来时.如：By the end of the century the population numbered about four million. 到世纪末人口曾经达到四百万摆布.You can borrow my camera, but I must have it back by five o'clock.我的照相机你可以借去用，但是五点之前必定要还我.By the time that the security guards had realized what was happening, the gang were already inside the bank. 等到捍卫人员明白过来发生了什么事时，那一伙强盗曾经进了银行.He ought to be here by this time /by now.他此刻（此刻）应当曾经来到这里了. 如强调某形态在某时间前曾经完成，也经常使用完成式.如：By next Sunday you will have stayed with us for three months.至下礼拜日为止，你将与我们相聚三个月了. 3、“by＋时间”与祈使句连用，用于普通式.如：Please finish the task by the end of the month.请在月底前完成这项任务.Be here by this time tomorrow.明天这个时候要到这儿. 4、如强调某形态或动作在某时间为止还要继续下去，还可用完成进行式.如：By the time you graduate,I shall have been working here for five years. 到了你结业时，我就在此地不断工作了五年之久.。
过去完成时时间状语
过去完成时时间状语人们一直在努力探索语言，了解它的细微差别，以便能够更准确地表达意思。
在英语中，过去完成时尤为重要，它是一种将过去某一时刻和另一个过去的重要事件相结合的时态。
它的结构是 had +去分词，其中had过去完成时的助动词，过去分词表示先发生于这一时刻的动作或状态。
这种时态表达的是‘在某一时间以前已经完成’的概念，常常用来引起一些重要的暗示。
一般来说，过去完成时时间状语可以用以下方式来表达：by the time, by then, before, after, since, once，already等。
其中，by the time表示‘到某时候为止’；by then表示‘到那时为止’；before表示‘在另一个动作之前’；after表示‘在另一个动作之后’；since表示‘从那以后’；once表示‘一旦’；already表示‘早就’。
以下是它们的一些例子：By the time the meeting finished, most people had already left.By then, she had been working for the company for five years.She had already met him before the party.After he had finished his work, he went out for a walk. Since he had been unemployed for a long time, he was very happy to get the job.Once the bus arrived, everyone got off.此外，过去完成时时间状语还可用来强调某件事情发生的时间，表示‘以前曾经发生过的事’，突出重要性或给出一个原因或解释，这时可使用以下句型：It was by the time that……It was by then that……It was before that……It was after that……It was since that……It was once that……It was already that……例如：It was by the time that he had finished his report that I realized how late it was.It was by then that I had realized how important it was to pay attention to detail.It was before that I knew what to expect from the meeting.从上面可以看出，过去完成时可以用来表达一些先发生的事件，以及相关重要的暗示，而它在引起一些重要的暗示时尤其重要。
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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 leaveB. 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 hangingB. 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 leftB. she’s left• C. she was left D. she must leave5. By the time I saw the angry expression on his face，I_____ what I had to face.A. knewB. have known• C. would know D. had known6.（2008四川卷）The telephone_____，but by the time I got indoors，it stopped.A. had rungB. was ringingC. ringsD. 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. walksB. walkedC. has walkedD. had walked情态动词用法总结如下表学法提炼If they _________ to do this work, he might do it some other way.A. wereB. shouldC. willD. can2. I was told yesterday that the company _________ me to Rome next week for a business conference.A. should have sentB. were going to sendC. should be sendingD. should send3. Let’s take a walk, ________?A. will weB. don't weC. do weD. shallwe4. He was a good swimmer so he _________ swim to the river bank when the boat sank.A. couldB. mightC. shouldD. was able to5. I went to the doctor's yesterday, I had to wait for half an hour before he ________ see me.A. canB. mayC. mightD. could6. ---- _________ this book be yours? ---- No, it ________ not be mine. It ________ be his.A. Can, must, mayB. May, might, mustC. Can, may, mustD. Must, can, may7. ---- "We didn't see him at the lecture yesterday.”---- “He _________ it.”A. mustn't attendB. can't have attendedC. would have not attendedD. needed have attended8. They _________ the plane, or perhaps they have been prevented from coming for some reason.A. can have missedB. may have missedC. can have lostD. may have lost9. Since the ground is white, it _________ last night.A. had snowedB. must have snowedC. must be snowingD. must have been snowing10. You must be fifty, ________?A. mustn't youB. needn't youC. aren't youD. mayn't you11. You must have seen him off yesterday, _________?A. haven't youB. didn't youC. mustn't youD. needn't you12. ---- That must be a mistake.---- No .it _________ be.A. can'tB. isn't able toC. canD. was able to13. He had known the matter before you told him, so you _________ have told it to him.A. mustn'tB. can'tC. needn'tD. shouldn't14. How ________ so?A. dare you to sayB. dare you sayC. do you dare sayD. dare to say15. You are their teacher. You _________ care of them.A. should to takeB. might to takeC. ought to takeD. need to take16. She is studying medical science now but she _________ a lawyer.A. used to beB. would beC. wereY ou return the book now. You can keep it till next week if you like.A. can'tB. mustn'tC. needn'tD. maynot2. I wish I________ to the moon one day.A. can flyB. an able to flyC. could flyD. wasable to fly3. If my lawyer _______ here last Saturday, he _______ me from going.A. had been; would have preventedB. had been; would preventC. were; would preventD. were; would have prevented4. If it________ for the snow, we _______ the mountain yesterday.A. were not; could have climbedB. were not; could climbC. had not been; could have climbedD. had not been; could climb5. Without electricity human life ______ quite difficult today.A. isB. will beC. would have beenD.would be6. Jenny _______ have kept her word. I wonder why she changed her mind.A. mustB. shouldC. needD.would7. W e _______ last night, but we went to the concert instead.A. must have studiedB. might studyC. should have studiedD. would study8. —Could I borrow yourdictionary?—Yes, of course you ________ .A. mightB. willC. canD.should9. —If he ________ , he ________ that food.— Luckily he was sent to the hospital immediately.A. was warned; would not takeB. had been warned; would not havetakenC. would be warned; had not takenD. would have been warned; had nottaken10. I told Sally how to get here, but in fact, I _______ her, for she had been here a short time before.A. needn't tellB. didn't need to tellC. needn't have toldD. didn't need to have told。