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高考外語(yǔ)復(fù)習(xí):不同情境下情態(tài)動(dòng)詞的含義

2007-12-18 09:29:25  來(lái)源:城市快報(bào) 文章作者:段勝利

  情態(tài)動(dòng)詞試題,在近年來(lái)的高考中是每考必現(xiàn),有些題目難度也較大。情態(tài)動(dòng)詞考點(diǎn)和內(nèi)容不是很多,但掌握起來(lái)卻不是很容易。究其原因,是情態(tài)動(dòng)詞要傳達(dá)具體情境下,說(shuō)話人的口氣、心情、意愿或其言語(yǔ)中的態(tài)度取向,而這要求同學(xué)們?cè)趯W(xué)習(xí)中用心體會(huì),經(jīng)過(guò)認(rèn)真地“察言觀色”,才能準(zhǔn)確理解不同情態(tài)動(dòng)詞的含義。在答題時(shí),除了要熟練掌握每一個(gè)情態(tài)動(dòng)詞的基本用法之外,還要結(jié)合語(yǔ)句特定的暗示,說(shuō)話人語(yǔ)氣的變化,捕捉到“題眼”,洞察話里的語(yǔ)氣或情感,才能準(zhǔn)確答好相關(guān)的題目。

  例一:If you _____ drink so much, of course you’ll feel sick.

  A. ought to B. can

  C. might D. must

  答案D!叭绻惴且饶敲炊啵(dāng)然你會(huì)感覺(jué)不舒服了! must除了我們非常了解的表示必須、一定之外,還表示必然,堅(jiān)持,請(qǐng)……務(wù)必,不巧……偏偏……等。在這里,就是表達(dá)“堅(jiān)持,非要……”的意思。

  例二:Jack _________ the test again; in that case, his father will be very disappointed.

  A. must have failed

  B. might fail

  C. should fail

  D. could have failed

  答案B。題目中“in that case”,“要是那樣的話……”,是答題的關(guān)鍵所在,表達(dá)出一種可能出現(xiàn)的狀況,是對(duì)將來(lái)事情的推測(cè)。

  例三: Some women ______ a good salary in a job instead of staying home, but they decided not to work for the sake of the family.

  A. must make

  B. should have made

  C. would make

  D. could have made

  答案D。后半句decided給出過(guò)去的時(shí)間背景,因此只能在B和D之間選擇。情態(tài)動(dòng)詞+have done的結(jié)構(gòu)要注意不同情態(tài)動(dòng)詞搭配意義的區(qū)別。這里should have made是“本該(而沒(méi)做)”而could have made是“本來(lái)能夠(而沒(méi)做)”。

  學(xué)習(xí)和掌握情態(tài)動(dòng)詞,要注意下面幾點(diǎn):

  一、整體把握情態(tài)動(dòng)詞,掌握情態(tài)動(dòng)詞的四種方面:

  1.只用作情態(tài)動(dòng)詞的有:must, can/could, may/might, ought to等;

  2.既可是情態(tài)動(dòng)詞又可是實(shí)義動(dòng)詞的有:need, dare等;要掌握好它們的適用結(jié)構(gòu)和條件,例如:need用作情態(tài)動(dòng)詞,僅用于否定句和疑問(wèn)句,而不用于肯定句。在肯定句中要用must, have to, should, ought to或?qū)eed當(dāng)作行為動(dòng)詞使用。如:

  It’s cold outside; you need to wear warmer clothes.句中need是實(shí)義動(dòng)詞。

  3.既可作情態(tài)動(dòng)詞又為時(shí)態(tài)助動(dòng)詞的有:shall/should/will/would;要區(qū)別在不同的結(jié)構(gòu)中,上面的詞是情態(tài)動(dòng)詞還是時(shí)態(tài)助動(dòng)詞。例如:

  If you won’t let me have it, that will be a sign of weakness.

  上面的won’t是情態(tài)動(dòng)詞的否定。

  4.注意兩個(gè)成對(duì)詞:can——be able to和must——have to在用法上的要求。

  (1)在過(guò)去時(shí)態(tài)的肯定句中需要某種條件或努力做成某事,我們要用was/were able to而不能用could。例如:

  The swimmer was very tired but he _____ reach the shore before he was exhausted.

  A. might B. could

  C. should D. was able to

  答案D。

  (2)must與have to都可以表示“必須”的意思,但要注意:

  (1) must只有現(xiàn)在時(shí),而have to有現(xiàn)在時(shí)、過(guò)去時(shí)和將來(lái)時(shí)。如:

  We must try our best in our study, or we’ll fail to make progress.

  Two years ago, the poor boy had to leave school for lack of money.

  (2) must表示主觀看法,have to則側(cè)重于客觀需要。如:

  We must make every effort to improve our language ability.

  We have to greatly develop our language ability if we want to study abroad.

  二、重點(diǎn)掌握情態(tài)動(dòng)詞的三個(gè)考點(diǎn)

  1.基本用法重點(diǎn)突破shall,should和must

  在情態(tài)動(dòng)詞基本用法上,對(duì)于can,may等,我們相對(duì)已經(jīng)熟悉,而對(duì)shall,should和must等三個(gè)情態(tài)動(dòng)詞的“生疏”用法,同學(xué)們要特別注意。

  must:除表示必須、一定之外,還表示必然,堅(jiān)持,請(qǐng)…務(wù)必,不巧…偏偏…等;

  shall:用于第二、三人稱(chēng),用來(lái)表示說(shuō)話人的命令、警告、允諾、威脅或決心等;

  should:除表示必要或義務(wù)外,還可表示說(shuō)話人作出的推測(cè)、可能和驚訝等。

  例一:——What does the sign over there read?

  ——“No person ______ smoke or carry a lighted cigarette,cigar or pipe in this area.”

  A.will B.may

  C.shall D. must

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