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間斷性。例如： She had been studying for two hours when her classmate came to visit her. 當(dāng)她的同學(xué)來看她的時(shí)候，她學(xué)習(xí)有兩個(gè)小時(shí)了。 4. 過去完成進(jìn)行時(shí)與過去進(jìn)行時(shí)的區(qū)別。過去進(jìn)行時(shí)主要表示過去某時(shí)的一個(gè)動(dòng)作正在進(jìn)行。例如： I was writing a letter when she came to see me. 當(dāng)她來看我時(shí)我正在寫信。 I had been writing a letter for two hours by the time she came to see me. 當(dāng)她來看我的時(shí)候，我已經(jīng)寫了兩個(gè)小時(shí)的信了。 5. 過去完成進(jìn)過去完成進(jìn)行時(shí) 表示一個(gè)動(dòng)作從過去某時(shí)開始，一直延續(xù)到另一個(gè)過去行時(shí)與過去完成時(shí)的不同。過去完成時(shí)表示過去某時(shí)間前已經(jīng)發(fā)生的動(dòng)作或情況，這個(gè)過去的時(shí)間可以用by，before等介詞短語或一個(gè)時(shí)間狀語從句來表示

他們那些天是呆在哪兒的。 接具有“突然”之意when句。 　　I had only been reading a few minutes when he came in.我剛看了幾分鐘他就進(jìn)來了。 　　She'd only been reviewing her lessons for a short while when her little sister interrupted her.她溫習(xí)功課才一會(huì)兒，她妹妹就打斷她了。 　　I had been sleeping when my friend telephoned me.我正在睡覺時(shí)，我的朋友給我打電話。 時(shí)態(tài)比較編輯 過去完成進(jìn)過去完成進(jìn)行時(shí)的結(jié)構(gòu)：had been +動(dòng)詞ing。表示相對(duì)過去的某個(gè)時(shí)刻來說已經(jīng)對(duì)現(xiàn)在有直接影響并且還在進(jìn)行的動(dòng)作。很少用在否定句中，多以過去完成時(shí)行時(shí)與過去完成時(shí)的用法很相近，它通常表示某個(gè)過去正在進(jìn)行的動(dòng)作或狀態(tài)，持續(xù)到過去某個(gè)時(shí)刻，還未完成，一直持續(xù)到之后才結(jié)束 He had been waiting for two weeks． He was still waiting．（有一個(gè)表示一段時(shí)間的狀語） 他已經(jīng)等了兩個(gè)星期。他還在等。 Up to that time he had been translating those books．直到那時(shí)他一直在翻譯這些書。 He had been

受到懲罰。 3.I will be clear tomorrow . 我過去將來完成時(shí)和一般將來時(shí)還是有很大區(qū)別的，雖然，他們都表示將來的事情，但是，過去將來完成時(shí)的限制條件更多，強(qiáng)調(diào)的是“過去”的時(shí)間看將來的事情已經(jīng)“完成會(huì)把這件事弄個(gè)水落石出 4.Tomorrow will be Sunday. 明天就是星期天。 5.The rain will stop soon. 雨很快就要停了。 6.Shall we go there at five

單詞的積累和語法的掌握是學(xué)習(xí)英語的重中之重，備考四級(jí)的過程中，學(xué)習(xí)要學(xué)會(huì)歸納總結(jié)。下面是小編給大家整理的語法知識(shí)，大家可以作為學(xué)習(xí)的參考。 already 用在肯定句中(be動(dòng)詞、助動(dòng)詞、情態(tài)動(dòng)詞之后，實(shí)意動(dòng)詞之前)常與yet進(jìn)行轉(zhuǎn)換。例如：I have already finished the work.我已經(jīng)完成這項(xiàng)工詞作了。 改為否定句：I haven't finished the work yet.我還沒有完成這項(xiàng)工作。改為一般疑問句：Have you finished the work yet? yet 放在否定句和一般疑問句句末。 其他的標(biāo)志詞:just，before，recently,still，lately，never，ever，twice，on several occasions，in the past/last few days/weeks/months/years，(up to)these few days/weeks/months/years,this morning/week/month/year(多用于一般過去時(shí))，up to present，so far，up to now，up till now，till now。 since+時(shí)間點(diǎn)=for+時(shí)間段=since+時(shí)間段+ago since+一般過去時(shí)態(tài)的時(shí)間狀語從句。例如：He has been here since he joined the army。自從他參軍以來,他一直在這兒。 before 表示之前發(fā)生的事情，放在句末 例如：I have been to this place before.我之前去過了這個(gè)地方 just 表示剛剛做過的事情，放在have/has后面 例句：I have just cleaned my room.我剛剛清理了我的房間 ever 表示經(jīng)常的或習(xí)慣性的動(dòng)作，常與表示頻率的時(shí)間狀語連用。放在have/has后面，動(dòng)詞后面 例句：Their debts have grown ever larger。他們的債務(wù)不斷增加。 想要學(xué)好英語并非三兩天的事，學(xué)習(xí)的時(shí)候方法很重要，方法用對(duì)，學(xué)習(xí)才能提高效率。

本書就已經(jīng)被讀了兩周了。 8. She told me she would have been teaching in that university for 20 years by that summer. 她告訴我到那年夏天她過去將來完成進(jìn)行時(shí)和過去將來完成時(shí)，還特地把過去將來完成時(shí)在那所大學(xué)教書就滿20年了。 9. I would have forgotten my mother's birthday if you hadn't reminded me. 如果你不提醒我，我會(huì)忘了我媽媽的生日。 10. She would have been travelling for two weeks. 她已經(jīng)旅游2周了。

行時(shí)是不是和過去將來完成時(shí)的被動(dòng)態(tài)有點(diǎn)相似呢？讓我們來通過例句感受其中的不同： （1） He said he would have been doing homework tomorrow afternoon. 他說明天下午他會(huì)在寫過去將來完成進(jìn)行時(shí) 表示動(dòng)作從過去某時(shí)間開始一直延續(xù)到（對(duì)于過去來說）將來的某一個(gè)時(shí)間。 基本形式：should/would have been + v-ing 過去作業(yè)。 The teacher said the assignment would have been handed in before next week. 老師說作業(yè)在下周前交。 （2） He said that he would have been working. 他說他會(huì)在工作。 The work would have been finished before 4 o'clock. 這個(gè)工作4點(diǎn)前會(huì)結(jié)束。 （3） We would have been having a meeting tomorrow. 明天我們會(huì)在開會(huì)。 The meeting would have been finished before 10 o'clock. 會(huì)議會(huì)在10點(diǎn)前結(jié)束。 （4） She would have been shopping by Friday. 她星期五前會(huì)在購物。 The house would have been bought next week. 這個(gè)房子下周會(huì)被買走。 （5） He said that he would have been cleaning his room. 他說他會(huì)在打掃房間。 He said that his room would have been being cleaned for 3 hours. 他說他的房間已經(jīng)被打掃3小時(shí)了。 由例句來看，分辨過去將來完成進(jìn)行時(shí)和過去將來完成時(shí)的被動(dòng)態(tài)的重點(diǎn)在于找出主語。確定好了主語，就能輕松的看出是否被動(dòng)了。

發(fā)生的動(dòng)作或存在的狀態(tài)。如： 　　Liu Ying was in America last year. 劉英去年在美國。 　　Jim rang you just now. 吉姆剛才給你打了電話。 (2) 表示過去經(jīng)?；蚍磸?fù)發(fā)生的動(dòng)作。常接時(shí)間副詞often, usually,? 4. 特別說明 ? ?有些動(dòng)詞的過去時(shí)，如：expect, hope, intend, plan, wanted 等一般過去時(shí)，后接不定式的完成時(shí);或它們的過去完成時(shí)接不定式的一般式，都可表示過去未曾實(shí)現(xiàn)的意圖、打算或希望。如： 　I hoped to have been invited to his wedding party. ? ?—I had hoped to be invited to his wedding ceremony. 我本希望他來邀請(qǐng)我參加他的婚禮。 　I intended to have joined their games. ? ?—I had intended to join their games. 我本打算參加他們的比賽。

過去時(shí)表示過去某時(shí)發(fā)生的動(dòng)作或單純敘述過去的事情，強(qiáng)調(diào)動(dòng)作;現(xiàn)在完成時(shí)為過去發(fā)生的，強(qiáng)調(diào)過去的事情對(duì)現(xiàn)在的影響，強(qiáng)調(diào)的是影響。 2)過去已從巴黎回來了。 　　She returned yesterday.她是昨天回來了。 　　He has been in the League for three years.(在團(tuán)內(nèi)的狀態(tài)可延續(xù)) 　　He has been a League member for three years.(是團(tuán)員

完了） It has been raining for two hours. 雨已經(jīng)下了兩小時(shí)了。（現(xiàn)在還在下） （2） The car is going again now. Tom has repaired it. 這車又能開了，湯姆修好了它。（修完了） Tom’s hands are very dirty. He has been repairing the car. 湯姆的手很臟，他正在修車。（還在修） （3） I have been writing a book. 我一直在寫一本書。（還沒寫完） I have written a book. 我已經(jīng)寫了一本書。（寫完了） 注意 1、有時(shí)現(xiàn)在完成時(shí)和現(xiàn)在完成進(jìn)完成進(jìn)行時(shí) 表示動(dòng)作從過去開始一直持續(xù)至今，或剛停止、或要繼續(xù)下去。也可以表示某種經(jīng)歷。 句型：have +been +doing 現(xiàn)在完成時(shí)行時(shí)表達(dá)的意思一致。 例如： She has worked on painting for six years. 她畫畫畫了6年了。（還會(huì)繼續(xù)） She has been working on painting for six years. 她畫畫已經(jīng)畫了6年了。（還會(huì)繼續(xù)） 2、表示狀態(tài)的動(dòng)詞不用于現(xiàn)在完成進(jìn)行時(shí)。 例如： I have liked piano for a long time. 我喜歡鋼琴很久了。（喜歡是一種狀態(tài)） I have been liking piano for a long time. （錯(cuò)句）

提及的某一將來時(shí)間。 如：?We?will?have?been?married?a?year?on?June?25th.??到6月25日我們倆結(jié)婚就滿1年了。 By?this?time?next?week,?I?will?have?been?working?for?this?company?for?24?years.??到下星期此刻，我就已經(jīng)為該公司干了24年了。 ? 現(xiàn)在完成時(shí)，過去完成時(shí)和將來完成時(shí)的區(qū)別：? 1.?現(xiàn)在完成時(shí)以現(xiàn)在時(shí)間為參照點(diǎn)，表示在“現(xiàn)在”以前完成的動(dòng)作或持續(xù)到“現(xiàn)在”的狀態(tài)；? 2.?過去完成時(shí)則以過去時(shí)間為參照點(diǎn)，表示在“過去”某一時(shí)間以前發(fā)生的動(dòng)作或持續(xù)到“過去”某一時(shí)間的狀態(tài)；? 3.?將來完成時(shí)則以將來時(shí)間為參照點(diǎn)，表示在“將來”某一時(shí)間為止已經(jīng)完成的動(dòng)作或持續(xù)到“將來”某一時(shí)間的狀態(tài)。? He?has?finished?writing?his?novel.??他已寫完了他的小說。? He?had?finished?writing?his?novel?by?the?end?of?last?year.??去年年底他就寫完他的小說。? He?will?have?finished?writing?his?novel?by?the?end?of?next?year.??到明年年底他就會(huì)寫完他的小完成時(shí)表示表示一個(gè)持續(xù)到過去說了。? 與一般現(xiàn)在時(shí)代替一般將來時(shí)一樣，在表示時(shí)間或者條件的狀語從句，通常要用現(xiàn)在完成時(shí)來表示將來完成時(shí)，而不能直接使用將來完成時(shí) ? 怎么樣，看完了小編給大家準(zhǔn)備的語法知識(shí)，有沒有感覺收獲頗多呢？喜歡就收藏起來吧~