【正文】
.: I39。 .: When I arrived in Inner Mongolia, it had been snowing for half a month. B)強(qiáng)調(diào)在故去的某一活動(dòng)或時(shí)間之前一直在持續(xù)的一項(xiàng)活動(dòng)。s still raining. It has been raining since 8 o39。l 用法: A) 延續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)。 (圖中每一個(gè)黑點(diǎn)表示以此動(dòng)作;虛線(xiàn)表示于現(xiàn)在有聯(lián)系) .: For more than eight years, scientists have argued over whether life exists on the planet Mars. 八十多年以來(lái),科學(xué)家們一直就火星上是否有生命存在這一問(wèn)題不斷進(jìn)行爭(zhēng)論。ve worked in this pany since 1980. 2. for+時(shí)間段 .: I39。ll turn5. want, am not eating6. is having, doesn39。ll be lying on a beach in Sanya this time tomorrow. Wait until seven o39。 .: I was discussing my thesis with my director at this time last night.(特定時(shí)刻) B) 過(guò)去進(jìn)行時(shí)還常常和一般過(guò)去時(shí)配合使用。 .: What program are you watching? I am studying English. B) 表示現(xiàn)階段正在持續(xù)的動(dòng)作。s going to rain. b. I feel terrible. I think I39。全句的意思是:“如果要避免食品短缺,就必須作出更大努力來(lái)增加農(nóng)業(yè)產(chǎn)量。) b) 該做或不該做的事情(語(yǔ)氣上接近于should, must, ought to, have to),表示一種命令、規(guī)勸性語(yǔ)氣。 3) 意愿:說(shuō)話(huà)人既不是預(yù)計(jì)某事會(huì)發(fā)生,也不是預(yù)先經(jīng)過(guò)考慮決定將做某事,而是在說(shuō)話(huà)的時(shí)刻立即做出決斷表明他將做某事。l 用法: A) 表示過(guò)去某個(gè)時(shí)間發(fā)生的動(dòng)作或情況。l 用法: A) 表示現(xiàn)在發(fā)生的動(dòng)作、情況、狀態(tài)和特征。 .: The sun rises in the east and sets in the west. Knowledge is power.l 這一用法場(chǎng)合一些表動(dòng)作頻率的時(shí)間副詞連用: 1). 表示肯定的頻率副詞:always, frequently, usually, sometimes, generally, occasionally, often etc. 2). 表示否定的頻率副詞:never, seldom, rarely etc.216。 .: I slept for eight hours last night. (表示在過(guò)去某一段時(shí)間內(nèi)持續(xù)的動(dòng)作,但這動(dòng)作現(xiàn)在已經(jīng)結(jié)束了)3. 一般將來(lái)時(shí)l 形式:will/shall do或be going to dol 意義:一般將來(lái)時(shí)表示在未來(lái)的某個(gè)時(shí)間將要發(fā)生的某個(gè)動(dòng)作或狀態(tài)。 . Do not worry, I am about to make a close examination on you. (別擔(dān)心,我馬上就給你做一次仔細(xì)的檢查。另外,從上下文看,事情顯然尚未解決,所以應(yīng)該用將來(lái)時(shí)的被動(dòng)語(yǔ)態(tài)。 2) be going to 通常用來(lái)表示說(shuō)話(huà)人與其所說(shuō)的時(shí)間馬上或在相當(dāng)近的將來(lái)就要發(fā)生。t believe39。 .: Jack is always borrowing money and forgetting to pay you back. Jack常常借錢(qián)忘還。先arrive,后telephone)6. 將來(lái)進(jìn)行時(shí)l 形式: will be doingl 意義:強(qiáng)調(diào)在將來(lái)的某個(gè)具體時(shí)間正在發(fā)生的動(dòng)作或事情。ll have to wait for the next one.10. It (rain)hard, but no one stopped working. 單選選擇1. I39。 3) 與這種用法的現(xiàn)在完成時(shí)態(tài)連用的時(shí)間狀語(yǔ)通常是表示“一段時(shí)間”的時(shí)間狀語(yǔ),已說(shuō)明某個(gè)動(dòng)作或狀態(tài)持續(xù)了多久。這種完成時(shí)態(tài)是中國(guó)學(xué)生對(duì)難以理解的,也常常和一般過(guò)去時(shí)混淆不清。 .: I had stayed in America for 2 years when he moved here.(move是過(guò)去的動(dòng)作,stayed發(fā)生在moved之前,即過(guò)去的過(guò)去;在moved之后還將會(huì)繼續(xù)stayed) B)如同現(xiàn)在完成時(shí)的第二種用法,表示開(kāi)始于過(guò)去之前的動(dòng)作倒過(guò)去這一時(shí)刻之前即已停止.過(guò)去完成時(shí)的動(dòng)作通常是短暫動(dòng)作。.: It began raining 2 hours ago and it39。 .: Every Sunday they meet in the same bar. They39。具體來(lái)說(shuō),就是表示過(guò)去某一活動(dòng)或時(shí)間之前的一段時(shí)間內(nèi)重復(fù)發(fā)生的動(dòng)作。 .: I will have been