新概念英語(yǔ)第二冊(cè)第四課課文詳解

字號(hào):

一、本課生詞和短語(yǔ)
    1、exciting adj. 令人興奮的
    excite:激動(dòng)
    excited:
    -ed: 自己感到
    -ing:令人感到
    exciting boy
    interesting man
    The man is interesting.
    The news exciting,I am excited
    其賓語(yǔ)一定是人
    The news excited me.
    讓后面的人感到...
    interesting:令人感到有趣的
    interested: 感到有意思的
    The book interests me.
    2、receive v. 接受,收到
     I have just received a letter from my brother, Tim.
     我剛剛收到弟弟蒂姆的來(lái)信,
     receive[ri5si:v]vt.收到, 接到, 接收(receive的過(guò)去式和過(guò)去分詞是received)
     re-前綴,表"又,重新"的意思。
    Receive/ accept/和take的區(qū)別:
    accept:同意接收
    receive:客觀(guān)的收到
    take take the exam:接收考試; take advice接收建議
    This morning I received a bunch of flowers from a boy,but I didn't accept
    it.
    take take the exam:接收考試; take advice接收建議
    receive/have
    receive/have a letter from somebody.
    3、firm n. 商行,公司
    Company
    firm 主要用在非正式場(chǎng)合和口語(yǔ),Company 是公司的正式稱(chēng)呼。
    4、abroad adv. 在國(guó)外
    副詞,直接和動(dòng)詞連用
    go aroad
    live abroad
    study abroad
    5、so he is finding this trip very exciting.因此,他覺(jué)得這次旅行非常激動(dòng)人心。
     重點(diǎn)了解動(dòng)詞find:
     find[faind]vt.找到, 發(fā)現(xiàn), 感到, 查明, 得到, 認(rèn)為, 見(jiàn)到...的存在vi.裁決n.發(fā)現(xiàn)
     find 過(guò)去式和過(guò)去分詞是found
     讀一讀幾個(gè)有find 的例句:
     1. I think I'm lost; I can't find the bridge.
      我想我是迷路了,我找不到那座橋了。
      2. We have found oil under the North Sea.
      我們?cè)诒焙0l(fā)現(xiàn)了石油。
      3.find it difficult to explain
     覺(jué)得難以說(shuō)明
     4. find a good friend in (sb.)
     發(fā)現(xiàn)某人是個(gè)好朋友
    習(xí)慣用語(yǔ):
     find out 發(fā)現(xiàn), 找出; 猜著, 想出; 揭發(fā)(壞人等)
     be found in 在某地, 到某地
     be found at 在某地, 到某地
    6、……h(huán)e has already visited a great number of different places in Australia.
     a great number of 不少的,多數(shù)的
     great number of 接可數(shù)名詞復(fù)數(shù),例如:a great number of books, a great number of workers.
    二、本文時(shí)態(tài)講解
    本課出現(xiàn)多的是現(xiàn)在完成時(shí)態(tài)的用法,助動(dòng)詞have/has+動(dòng)詞的過(guò)去分詞構(gòu)成完成時(shí)態(tài)。它的否定句是在have/has后邊加not,變一般疑問(wèn)句是把have/has提前。E.g. I have ridden a horse. I have not ridden a horse. Have you ridden a horse?
     它的時(shí)間狀語(yǔ)通常為already, just, yet, ever, never, before等。另外還可和since+表過(guò)去的時(shí)間點(diǎn),for+時(shí)間段連用。
     課文中現(xiàn)在完成時(shí)態(tài)標(biāo)志性的詞語(yǔ)有:just, for six months,already,before, never .幾乎將所有的標(biāo)志性詞語(yǔ)全部用上了。所以大家要好好背誦記憶。
    在學(xué)習(xí)完成時(shí)態(tài)中,常常愛(ài)錯(cuò)的三個(gè)地方:
     在現(xiàn)在完成時(shí)態(tài)中,1、易丟掉have/has:
     例:He taken (take) the medicine before.
      答案:has taken
      解析:have/has 為助動(dòng)詞,起構(gòu)成時(shí)態(tài)的作用,是不能省略的。我們可以這樣記:
    "現(xiàn)在完成時(shí)態(tài)中,have/has 不可缺。"
     2、have與has易用混 :
      例:I has never heard (hear) of that before.
      答案:have heard
      解析:現(xiàn)在完成時(shí)與一般現(xiàn)在時(shí)一樣也有單三人稱(chēng)的變化,當(dāng)單三人稱(chēng)作主語(yǔ)時(shí)用 has, 一般人稱(chēng)作主語(yǔ)時(shí)用have.
     3、延續(xù)性動(dòng)詞與短暫性動(dòng)詞易弄錯(cuò):
      例:She has left (離開(kāi)) for 2 hours.
     答案:has been away
      解析:在肯定句中,與since或for引出的時(shí)間狀語(yǔ)連用的是延續(xù)性動(dòng)詞,不能是短暫性動(dòng)詞,但在否定句中短暫性動(dòng)詞也是可以的。E.g. I haven't bought clothes for one year. 在此題中l(wèi)eave是短暫性動(dòng)詞,不能與for+時(shí)間段連用,須把它改成相應(yīng)的延續(xù)性動(dòng)詞。如stop be over等。此題中l(wèi)eave要改成be away。這兩種詞的轉(zhuǎn)換是學(xué)習(xí)現(xiàn)在完成時(shí)需要注意的。
     英語(yǔ)中現(xiàn)在完成時(shí)態(tài)與過(guò)去完成時(shí)態(tài)有什么區(qū)別?
     區(qū)別就看他們有無(wú)兩個(gè)表過(guò)去的時(shí)間,若有,就用過(guò)去完成時(shí):
     1.現(xiàn)在完成時(shí)表示過(guò)去發(fā)生某動(dòng)作從過(guò)去一直持續(xù)到現(xiàn)在(將來(lái)還有可能繼續(xù)下去)。常和for+時(shí)間段和since+時(shí)間點(diǎn)連用。
     I have studied English for 3 years.( 從過(guò)去持續(xù)到現(xiàn)在)
     I have taught here since I came here.( 主句的動(dòng)作"教"從過(guò)去持續(xù)到現(xiàn)在),(記住:since(從……)從句的動(dòng)作要用過(guò)去時(shí),我們平時(shí)不是愛(ài)說(shuō)"從過(guò)去"嗎?)
     2.過(guò)去完成時(shí)則主要體現(xiàn)過(guò)去發(fā)生的兩動(dòng)作的先后有別,表達(dá)的是"過(guò)去的過(guò)去",即比過(guò)去發(fā)生的某動(dòng)作都還要"過(guò)去",兩動(dòng)作中先發(fā)生的就用過(guò)去完成時(shí),后發(fā)生的則只用一般過(guò)去時(shí)。運(yùn)用過(guò)去完成時(shí)的句子往往有兩過(guò)去的時(shí)間或動(dòng)作。
     Mr Green had lived in New York for ten years before he came to China.("來(lái)"中國(guó)已過(guò)去,而先前"住"在紐約更過(guò)去!)
     We had learned 1000 words by the end of last term.
    ?。?上期期末"已過(guò)去,而是在其前"學(xué)"的就更過(guò)去了?。?BR>    三、課文其他易混淆語(yǔ)法
    have/has been to, have/has gone to 之間的區(qū)別:
     文中原句:
     He has been there for six months.has gone to Alice springs,
     have/has been to強(qiáng)調(diào)的是"去過(guò)"某地,已經(jīng)不在所說(shuō)的地方,可以和次數(shù)(once,twice,three times)連用,還可以和never ,ever, just, before,so far,already等連用,但是不能和表示一段時(shí)間的短語(yǔ)連用(如:how long,for two days,since last week等)
     have/has gone to表示"去了"某地,已經(jīng)不在這里了,故不能和第一和第二人稱(chēng)連用,不能跟次數(shù)連用,不能和never,ever,before連用,還不能和一段時(shí)間連用。
     Have/has been in 強(qiáng)調(diào)的是在某個(gè)地方停留的時(shí)間,要接一段時(shí)間。
    動(dòng)手練習(xí):
    -Mr Li isn't here. He_______Suzhou.
    -What a good place!But I_____away from my hometown since I worked.
    A has been to;have never been
    B has gone to;havenever been
    C has been to;didn't be
    D has gone to;have never gone