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188 it is 一段时间 since 一般过去时或现在完成时

188 it is＋一段时间＋since＋一般过去时或现在完成时

下面的不同说法都是可以的：

It is three years since I（last）saw Bill．

自从我（上次）和比尔见面到现在已经三年了。

It is three years since I have seen Bill．

自我和比尔那次见面以来已经有三年了。

I last saw Bill three years ago．

我最后一次见到比尔是在三年以前。

I haven’t seen Bill for three years．

我已经有三年没见到过比尔了。

It is two months since Tom（last） smoked a cigarette．汤姆最后一次抽烟到现在已有两个月了。

It is two months since Tom has smoked a cigarette．

汤姆已经两个月没抽烟了。

He last smoked a cigarette two months ago．

他最后一次抽烟是两个月以前。

He hasn’t smoked a cigarette for two months．

他已经有两个月没有抽烟了。

我们可以用 it is… since结构，不带副词 last：

It is two years since he left the country．

他离开这个国家已经两年了。

然而，如果想换用一个别的句式，则只能用下面的办法：

He left the country two years ago．

他两年前离开了这个国家。

在这里不能像上面有关比尔的句子那样用现在完成时的否定形式。 He hasn’t been（living）in this country for the last two years（这两年他没有在这个国家住过）是可以的，但与 He left two years ago（他离开两年了）意思不完全等同。这种结构可以用于一般过去时：

He invited me to go riding with him． But it was two years since I had ridden a horse．

他邀请我和他一起去骑马。但那时我已经两年没有骑马了。（在他邀请我之前，我已经有两年没有骑马了，所以我不知道自己是否还能骑得开心。）

人教版中考英语中考英语总复习真题过去完成时汇编

人教版中考英语中考英语总复习真题过去完成时汇编一、初中英语过去完成时 1．The girl sitting next to me on the plane was very nervous, for she before. A. didn't fly B. hasn't flown C. hadn't flown D. wasn't flying 【答案】C 【解析】【分析】句意：飞机上坐在我旁边的女孩很紧张，因为她以前没有坐过飞机。根据上文的句子The girl sitting next to me on the plane was very nervous的一般过去时态可知，这里空白处所表示的是过去的过去，谓语应该用过去完成时态：had+动词的过去分词。根据句意，故答案为C。【点评】考查过去完成时态。掌握过去完成的意义和用法：表示过去的过去的动作或状态。用had+动词的过去分词表达。 2．By the time I finished my homework，my mother ． A. slept B. has been asleep C. was asleep D. had been asleep 【答案】 D 【解析】【分析】由上文“By the time ”和“ finished”可知此处应为过去完成时，故选D. 【点评】考查过去完成时。 3．When I ______ the cinema, the film _______for ten minutes A. got to; has begun B. arrived at; has been on C. reached; had begun D. hurried to; had been on 【答案】 D 【解析】【分析】这题考查时态，第一空几个选项都可以，第二空指“我到电影院之前电影已经开始5分钟了”，用过去完成时，又因为begin是短暂动词，不能和一段时间连用，所以选D。【点评】要注意完成时态中的延续性动词的转换。 4．By the time they reached the bus stop, the bus__________ for ten minutes. A. had left B. have left C. had been away D. have been away 【答案】 C 【解析】【分析】句意:到他们到达公交车站的时候，公交车已经离开十分钟了。句中by the time 的意思是到...时候，后跟从句，从句使用的是一般过去时。根据句意可知，从句中表示的动作应该发生在他们到达车站之前，故应该用过去完成时。A是过去完成时，但是left是瞬间性动词，不能和一段时间状语连用；B是现在完成时；C是过去完成时，并且是系表结构，可以和一段时间连用；D是现在完成时。故选C。

八年级下现在完成时全面知识点

一现在完成时概念及用法： 1 表示过去发生或已经完成的动作对现在造成的影响或结果。常和just（刚刚），already （已经），yet（已经），never（从不），ever （曾经），before（以前），so far（到目前为止）等时间状语连用。 2 表示从过去某一时刻开始一直持续到现在的动作或状态，还有可能继续下去，常和for 或since引导的时间状语连用。此时的动词必须是延续性动词。构成：have/ has(助动词)+V过去分词肯定句：主语+ have/ has+V过去分词+其他否定句：主语+ have/ has+not+V过去分词+其他一般疑问句：have/ has+主语+ +V过去分词+其他肯定回答：Yes, 主语+ have/ has. 否定回答：No, 主语+ haven’t/ hasn’t. 3 常用标志词语 already, never, ever, just, before, so far, yet , since + 过去的时间点,for + 一段时间等 already 常用于肯定句；yet 用于否定句和疑问句。二常用句型结构辨析（一）have/has been to / have / has gone to / have/ has been in 辨析： ⑴ have/ has been to + 地名“曾经去过某地” , 现在已经回到原地。 He has been to England twice．他曾经去过英国两次。(现在已经不在英国了) Have you ever been to the Great Wall？你到过长城吗?（现在已经不在长城上） ⑵have gone to + 地名“已经去某地了”，说话时该人不在现场。 He has gone to England。他已去英国了。 (已经不在说话的地方，到达英国或者在去英国的路上) ⑶ have been in +地点待在某地，常与时间段搭配。 I have been in Shanghai for three years. （二）since与for区别： 1）for其后只能接表示“一段时间”的名词性短语，可用于多种时态。表示动作或状态持续的时间长短； since其后接表示“时间点”的短语或从句（一般过去时）；也可以接“一段时间+ago”，常用于完成时态；还用于句型“It’s+时间段+since+一般过去时态的句子”。表示过去某个时间发生并持续至说话时的动作或状态。 I’ve lived in this city for five years. He usually sleeps for 12 hours every day. We’ve studied here since 2009. She has worked here for five years. It’s two years since I came to China. 练习：用since 和for填空 1.Jim has been in Ireland last Monday. 2.Jill has been in Ireland three days. 3.His aunt has lived in Australia 15 days. 4.Mike has been ill a long time. He has been in hospital 0ctober. 2）for 与since引导的时间状语可以进行相互替换

人教版英语八年级下册试题since 和 for 的用法(用于现在完成时)

初中英语学习材料 madeofjingetieji since 和for 的用法(用于现在完成时) 表示过去已经开始持续到现在的动作或状态常用的时间状语有：for, since, how long, so far, these days等。 1. since : a).since +时间点①年代②时刻数③一段时间+ago b).现在完成时：主句(主语+have/has +延续性动词的过去分词)+ since +从句一般过去时 c) It’s +时间段+since +短暂性动词的过去式 d).时间段+has passed +since +短暂性动词的过去式 for +一段时间练习：用since和for填空 1) ______ two years 2) _______ two years ago 3) _______ last month 4) ______ 1999 5) _______ yesterday 6) _______ 4 o’clock 7) ______ 4 hours 8) _______ an hour ago 9) _______ we were children 10) _____ lunch time 11) ______ she left here 12). He has lived in Nanjing ________ the year before last. 13). I’ve known him __________ we were children. 14). Our teacher has studied Japanese _________ three years. 15). She has been away from the city ___________ about ten years. 16). It’s about ten years __________ she left the city. 2. for: for +一段时间= since +一段时间+ ago 3. 与时间段连用时，短暂性动词应改为相应的延续性动词。 1) come/go to ------ be at /in 2)leave ----be away from 3)buy ----have 4) borrow /lend -----keep 4)open ---be open 5)close---be closed 6) die---be dead 7) start/begin ----be on 8) join—--be in /be a member of /be a soldier 9) become –be 10) fall asleep ---be asleep 11)catch a cold – have a cold 12) have/has gone to → have been in 13) put on → wear14) finish/end → be over 15) marry → be married 练习：.短暂性转换延续性 1) His grandfather died two years ago . His grandfather has ____ ____ for two years. _____two years _____ his grandfather ____. Two years ____ ____ ____ his grandfather _____. 2) I became a teacher in 2000. I ________ __________ a teacher for _________ _________. 3) The shop closed two hours ago. The shop ________ _________ _________ for _________ _________. 4) The door opened at six in the morning. The door ________ ________ ________ for six hours. 5)He left Fuzhou just now. He _______ ________ ________ _________ Fuzhou for five minutes. 6)The film began two minutes ago. The film ____ ____ ____ for ____ ____.How time flies! 7)They borrowed it last week. They _________ _________ it since __________ __________. 8)I bought a pen two hours ago. I _________ _________ a pen for ________ __________. 9)They married in 1990. They ________ _________ __________since _________. 10)The meeting finished at six. The meeting ________ ______ ______ for six hours. 11)My brother joined the army two years ago.

过去完成时中考真题

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人教版八年级下册现在完成时专项讲解

现在完成时现在完成时（present perfect tense）通常表示过去发生的动作一直延续到现在，而且还可能继续下去，或者表示过去的行为对现在造成一定的影响，可能还会产生结果等。 1.现在完成时结构 1.1.助动词have/has+动词过去分词。其中，助动词要随着主语的变化而变化，当主语是第三人称单数时，助动词要用“has”。例：Have you finished your work? He says that he has seen UFOs many times. 1.2.现在完成时的缩写形式：I have=I ’ve have not= haven’t has not= hasn’t 例：I’ve finished my work./He hasn’t finished his work. 1.3.现在完成时的一般疑问句：Have/Has+主语+动词的过去分词+其他？肯定回答：Yes,主语+have/has.否定回答：No,主语+haven’t/hasn’t. 例：----Have you finished your work?----Yes,I have./No,l haven’t. ----Have they arrived?----Yes,they have./No,they haven’t. 1.4.1.通过加-ed的形式来构成规则动词的过去分词，就像我们构成这些动词的过去式方法一样。大多数动词后+ed.如finish---finished. 以字母e为结尾的动词后+d,如change---changed. 以辅音字母加y结尾的动词，去掉y,再加ied.如carry---carried.

(完整版)现在完成时sincefor练习

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中考英语过去完成时专题(含答案)

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2017人教版八年级下英语现在完成时语法讲解

现在完成时（I）语法知识定义：（1）表示过去发生或已经发生的动作对现在造成的影响或结果,这个影响和结果对现在还必须存在.常与already(已经), yet(已经,还), just(刚刚),ever(曾经)，never 等词连用. 常用于肯定句或疑问句（均表示：已经）. 常用于否定句(表示：还、尚),疑问句末尾（表示：已经）. 现在完成时的构成及句型结构：（注：过去分词的变化分规则变化与不规则变化，规则变化与动词原形变过去式一样，不规则变化见教材137页） 1.肯定句：主语+have/has+过去分词+其他+时间. eg: I have already lost the key.我已经弄丢了钥匙. (我现在没有钥匙) He has ever read that book .他曾经看过这本书. (了解书的内容) They have just cleaned their hands.他们刚刚洗过手了. (手是干净的) 2.否定句：主语+haven’t/ hasn’t+过去分词+其他+时间. eg: I haven’t lost the key yet. He hasn’t ever read that book . They haven’t just cleaned their hands. 3.一般疑问句：Have/Has+主语+过去分词+其他+时间？肯定回答：Yes, 主语+have/ has. 否定回答：No, 主语+haven’t/hasn’t. eg: Have you already lost the key? Yes, I have. No, I haven’t. Has he ever read the book? Yes, he has. No, he hasn’t. Have they just cleaned their hands? Yes, they have. No, they haven’t. 4.特殊疑问句：特殊疑问词+have/has+主语+过去分词+其他+时间？ eg: What have you already done?（done是do/does的过去分词） What has he ever done? What have they just done? 定义：(2)现在完成时表示从过去开始一直持续到现在还有可能继续持续下去的动作或状态。常与for, since引导的时间短语或从句连用.

since通常和什么时态连用

since(自从)通常连用什么时态一、since通常通常搭配的时态当since表示“自从”时，不管它是用作介词、连词还是副词，它通常都要与现在完成时连用。如： I’ve worn glasses since my childhood.我从小就戴眼镜。 The works have been closed since January. 一月份以来这些厂就关闭了。 He’s put on a lot of weight since he gave up smoking.他戒烟后体重增加了许多。 Nothing has happened since. 从那以后未发生什么事。 She moved to London last May and has since got a job on a newspaper. 她去年五月到伦敦此后一直在报社工作。有时连用现在完成进行时。如： He has been working since noon. 他从中午就开始工作了。二、since搭配时态的特殊情况虽然since通常要与现在完成时连用，但在以下情况，它也可以连用除完成时态以外的其他时态： 1. 当主句表示“多长时间”时，动词可用一般现在时（当然也可用现在完成时）。如：It’s a long time since I met you last.好久不见了。 It’s just a week since we arrived here.我们到这里才一个星期。 It’s a long time since I met you last.从上次见到你，已有很长时间了。以上各句的it is也可换成 it has been，不过在口语或非正式文体中，用一般现在时的情形比较普遍。 2. 当主句谓语动词为seem等连系动词时。如： It seems like years since we last met. 我们似乎几年未见面了。 It seems like years since I last saw you. 从上次见到你以来好像已经有许多年了。 3. 当主句和从句表示情况“变化”时。如： She doesn’t come round to see us so much since her marriag e. 自从结了婚，她不怎么过来看我们了。（原来经常来，结婚后就不怎么来了）

现在完成时Since和for的用法

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