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ÂÞÓñÄÏ unit 3 Teaching aims and demands: 1.Difficult and important points: difficulty, however, explain, stay, reason, ask---for, a great many. the same as, more or less, come about, bring in, and so on 2. Every day English: ½»Á÷ºÍÓ¦´ð Step1 Revision Check the homework. Step2 listen to the tape of the unit. Step3©úMain Language points : 1 difficulty©ú n . [ U ]©úÀ§ÄÑ /[ C] ¾ßÌåµÄÀ§ÄÑ; ÄÑ×ö/¶®µÄÊ©úHe always helps me whenever I have©údifficulties . get into difficulties©úIf you do it like that you will get into difficulties .©ú adj. difficult©ú©úthere be difficulty / trouble/ a hard time( in )doing sth./ with sth. have difficulty / trouble / problem ( in ) doing sth.©ú ×öijÊÂÓÐÄÑ´¦ have©ú(some, great, no, little) difficulty/ trouble with sth.©ú©ú©úÔÚijÊÂÉÏÓÐÄÑ´¦ do sth.. without©ú( with ) difficulty©ú©ú ºÁ²»·ÑÁ¦µØ×öijÊ eg, There was some difficulty ( in ) explaining this to the©úSwede . ©ú Do you have any difficulty with the work ? 2 . do fiine = do well ( fine©úadv.) 3©úhave / take©úan examination ( ѧÉú) ²Î¼Ó¿¼ÊÔtake part in an examination (ѧÉú)²Î¼Ó¿¼ÊÔ ©ú©úgive©úan examination (ÀÏʦ)¿¼Ñ§Éúhold an examination©ú¾ÙÐп¼ÊÔ ©ú©úpass an examination©ú ͨ¹ý¿¼ÊÔ©úfail ( in )©úan examination©ú¿¼ÊÔ²»¼°¸ñ 4©ú©úhowever©úad .µ«ÊÇ;È»¶ø©úcf. but;ÁíÒ»·½Ãæ©ú©ú©ú©úconj . ÎÞÂÛÈçºÎ(ÔõÑù)©ú©ú ©ú©ú©úÓïÐò:©úhowever + adj / adv. + subject + V. ©úa©úI felt a bit tired . However , it's probably just the weather . ©úb©úHowever rich people are , they always want more . 5©úmore or less ±íʾ³Ì¶È,"»ò¶à»òÉÙ "; ÔÚÒ»¶¨³Ì¶ÈÉÏ= somewhat ; almost ©ú©ú©ú©ú©ú©ú ±íÊýÁ¿,³£Î»ÓÚÊý´ÊÖ®ºó, "´óÔ¼"©ú= about©ú©ú©úeg.©úa©úOur living condition has more or less improved.©úb The trip will take ten days mor or less . 6©ústay©ú link.v.©ú±£³Ö(ij״̬) a©úThe weather stayed fine for three days . b©úThe city library stays open till six o'clock . vi.´ô£¬Í£Áô£¬¶ºÁô£¬ÁôÏÂÀ´ cf. remain vi. ÁôÏÂÀ´ link.v©ú²àÖص±Çé¿ö»ò»·¾³·¢Éú±ä»¯È´ÒÀÈ»±£³ÖÔ×´¡£ The middle-aged woman remains young and beautiful, although something unhappy happened to her. 7 come about©ú ²úÉú;·¢Éú = happen/ take place/ occur ( ÊDz»¼°Îﶯ´Ê¶ÌÓï,ÎÞ±»¶¯Óï̬) eg.How did the accidernt come about ?©ú How did it come about that he left school? It came about like this---ÊÂÇéÊÇÕâÑùµÄ ©úcome along©ú ¹ýÀ´;¿ìµã©úCome along ! It's nearly eight o'clock . ©úcome out©ú ³öÀ´;³ö°æ©ú©úHow did the printing come out ? ©úcome to©úÀ´µ½;´ïµ½©ú©ú©úMy earnings come to 7,000 yuan a year . ©úcome into being©ú²úÉú;ÐÎ³É Nobody knows when this custom came into being in this area . ©úcome back to life©úËÕÐÑ©úWhen the wounded came back to life , he found himself in a hospital . come up©ú̧ÆðÍ·©úHe put his head under the water , but soon comes up for breath . ³¤³öÀ´,ÌáÉÏÀ´ Soon suggestions came up at the meeting . come across=run across/meet sb. by chance come at Ï®»÷£¬ come on ¸Ï¿ì£¬¼ÓÓÍ£¬come from À´×Ô£¬³öÉúÓÚ 8 .the answer ( entrance , key , memorial , exist , monument , note ) to .......µÄ´ð°¸( Èë¿Ú´¦,Ô¿³×,³ö¿Ú,¼ÍÄî±®,×¢ÊÍ) 9.the same ( ... ) as ...©ú"©úͬ( Ïñ)...Ò»ÑùµÄ" ©ú as©ú×÷¹Øϵ´ú´Ê,Òýµ¼ÏÞÖÆÐÔ¶¨Óï´Ó¾ä,²¢ÔÚ´Ó¾äÖÐ×öÖ÷Óï,±öÓïºÍ±íÓï. The price stays the same as before . /©úYour answer is the same as his. This is the same material as is used in building the bridge . 10 . just as ÕýÈç;Ç¡ËÆ©úºó½ÓÒ»¸ö±í·½Ê½µÄ×´Óï´Ó¾ä. ©ú a She loves singing just as her mother did . ©ú b Leave every thing just as you find it . 11 Ó¢ÓïÖеÄ" ¶à": A . ÐÞÊοÉÊýÃû´Ê¸´ÊýµÄ: ©ú many , a good / great many , a( large / great ) number of , quite a few B ÐÞÊβ»¿ÉÊýÃû´ÊµÄ: ©úmuch , a great deal of , a large / great©úamount of , quite a little . C ¼ÈÐÞÊοÉÊýÃû´ÊÓÖ¿ÉÐÞÊβ»¿ÉÊýÃû´ÊµÄ: ©úa lot of , lots of , plenty of , a large quantity of , large quantities of. cf. many a+sing. /a great many of + the / these / those +pl. 12.when©ú&©úwhile while©ú©ú A)©úÌØÊâÓ÷¨: a He is rich while his young brother is poor .©ú( ±í¶Ô±È, " ¶ø") b While there is life , there is hope . ( Ö»Òª) c While I admit that the problems are difficult , I don't agree that they cannot be solved . ( ¾¡¹Ü) B ) ´ÓÊôÁ¬´Ê, " Óë..... ʱºò" , Ö»ÓëÑÓÐøÐÔ¶¯´ÊÁ¬ÓÃ. ©ú©ú©úBe careful while you are crossing the street . C) while©ú©ún.©ú©úÒ»¶Îʱ¼ä ©ú©úwait for a while©ú µÈÒ»»á¶ù©úafter a while©ú¹ýÒ»»á¶ùÖ®ºó ©ú©ú in a short while©ú²»¾Ã once in a while©ú©ú¼ä»ò when©ú A)©ú´ÓÊôÁ¬´Ê,"µ±...... ʱºò" ,¿ÉÓëÑÓÐøÐÔ¶¯´ÊÁ¬ÓÃ,Ò²¿ÉÓë¶ÌÔÝÐÔ¶¯´ÊÁ¬Óéú. ©úa©úBe careful when you are crossing the street . ( Ò²¿ÉÓÃwhile ) ©úb What did you©úsee when (©ú²»ÓÃwhile©ú) you entered the room . B) ²¢ÁÐÁ¬´Ê, " Õâʱ", =©ú at that time ©ú I was about to go©úwhen the telephone rang©ú / I was about to start when it began to rain . C) when©ú conj . = since ; considering that©ú ¼ÈÈ»;¿¼Âǵ½ ©úHow can they learn anything when they spend all their spare time watching television ? 13©úask ... for...©ú©úÏòijÈËÒª... ask for sth.©úÒªÇóµÃµ½ ask sth. of sb.ÎÊijÈË( ijÊÂ) ©ú©ú ask ( sb.) for help©úÏò( ijÈË) ÇóÖú©úask ( sb. ) for advice©ú©úÏòijÈËÇó½Ì©ú ©ú©ú ask for the way©úÎÊ·©ú ask for trouble©ú×ÔÕÒÂé·³ 14. bring in ( = earn or get in )©ú©ú׬µÃ;ÈÃ... ½øÀ´;ÒýÀ´;ÎüÊÕ ©ú©úbring about©ú©ú©ú´øÀ´;Ôì³É©ú©úbring out©úʹÏÔ³ö;³ö°æ ©ú©úbring up©ú©úÅàÑø;Ìá³ö;Żͩú©úbring down©ú©ú»÷Âä;½µµÍ( ζÈ,¼Û¸ñ) eg. He brings in 800 yuan a month .©ú/©ú His talk brought in some new ideas . 15 .±íʾʱ¼äµÄÃû´ÊÇ°Èç¹ûÓÐ one , this , that , next , last©úµÈÐÞÊÎʱ, ÆäÇ°Ãæ²»¼ÒÈκνé´Ê.Èç, one day , this week . 16.seven people in ten©úÊ®ÈËÖÐÓÐÆßÈË©ú( = seven out of every ten people/ seven people out of ten / seven-tenth of people ) 17©úelder©ú©ú±íʾÇ×ÐֵܽãÃÃÖ®¼äµÄ³¤Ó×¹Øϵ,Ö»ÄÜÓÃ×÷¶¨Óï ©ú©úolder©ú©ú±íʾÄêÁäµÄ´óС,¿ÉÓÃ×÷±íÓïºÍ¶¨Óï eg.©ú©úMy _______sister who works in the bank is two years ________ than I . ©ú©ú A younger ; older©ú©úB older; elder©ú©úC elder ; elder©ú D elder ; older 18¡£explain sth. to sb./ explain to sb. that.clause ©ú Tom told me why he was late. He exlained that he missed the bus. 19. for some reason ÒòijһÔÒò/ What's the reason for---ÔÒòÊÇʲô/ That's (the reason) why ---do sth./ The reason why+clause /for +n. is that---©ú------µÄÔÒòÊÇ------´Ë¾äÐ͵Äthat ²»ÄÜ»»³Ébecause, for, since 1)Çë¶Ô·½Öظ´Ëù˵ÄÚÈÝ£º Would you please say that again ? Pardon? Sorry , I didn't follow you/ Ididn't catch what you said. 2)ÎʶԷ½Ê²Ã´Òâ˼£ºWhat do you mean?/ What do you mean by that?/ What does this word mean?/ What's the meaning of this word?. Ex. 1 Do you know the difficulty he had ____ the work ? ©úA on finishing©ú©ú©úB to finish©ú©ú©ú C finishing©ú©ú D©úhaving finished 2 My name is Robert , _____ most of my friends call me Bob for short . ©úA then©ú©ú B instead©ú©ú©ú C however©ú©ú©úD©úbut 3 We'll have to finish the job , ______ .(NMET 1999) ©ú A long it takes however B it takes however long C long however it takes D however long it takes 4 If you work with a strong will , we can overcome any difficulty , ____ great it is .(NME 1995) ©ú©ú A what©ú©ú B©úhow©ú©ú©úC however©ú©ú©ú©úD©úwhatever 5 " Have you finished designing the machine ? "©ú" _____ finished but there's still something to improve " ©ú©úA©úMore or less©ú©ú©ú B Sooner or later©ú©ú©ú©ú C Less than©ú©ú©ú©úD More than 6. " Is the zoo far from here? " " It'e an hour's journey , _____." ©ú©ú A©úmore and more©ú©ú B©úmore or less©ú©úC©úand so on©ú©úD©úall©útogether 7 Why don't you go and ask him _____ help ?©ú©ú A about©ú©ú©úB for©ú©ú C of©ú©ú©ú©ú©úD / 8 It's said that the weather will ____ hot for another three or four days . A look©ú©ú B©úlast©ú©úC stay©ú D get 9 This is the same knife _____ I lost yesterday .©ú©ú A©úwhich©ú©ú©ú©úB©úwhat©ú©ú©ú C©úlike©ú©ú©úD©úas 10©úHow much has the company _____ this year ? ©ú©úA©úbrought in©ú©ú B©úbrought down©ú©ú©ú C©úcome about©ú©ú©ú D©úmade in 11 There are ______ people dancing and singing in the park on May Day . ©úA©úa good many©ú©úB a good many of©ú C©úthe large number of©ú D a great deal of 12 ______ is needed in very cold weather . A A lot of clothes©ú B©úMuch clothing C many a clothing©ú D©úA large number of clothing 13. She thought I was talking about her daughter , _____©úin fact , I was talking about my daughter .(NMET 95) ©ú©ú©ú A whom©ú B©úwhere©ú©ú C©úwhich©ú©ú©úD©úwhile 14.Why do you want a new job , ___ you're got such a good one already ? ( NMET1998) ©ú©ú©úA that©ú©ú©ú B where©ú©úC©úwhich©ú©ú©úD©úwhen©ú( ¼ÈÈ») 15 . " I am going to the office . " " ____ you're there , can you get me some stamps ?" (NMET1999) ©ú©ú©ú©ú©ú©ú©ú©ú©úA©úAs©úB©úWhile©ú C©úbecause©ú D©úIf 16. Mother was worried because little Alice was ill , especially ____ Father was away in France .( NMET1994) ©ú©ú©úA during©ú©ú B if©ú©ú C unless©ú©ú D while©ú 17©ú_____ , Mother will wait for him to have dinner together . ( NMET 1997) ©úA©úHowever late is he©úB However he is late©úC However is he late©úD However late he is 18 Their working conditions stayed the same ___ ten years ago .©ú A©ú as©ú©ú©úB like©ú©ú©úC to©ú©ú D©úwhat 19They didn't know the change had ____ .©ú A©úcome on©ú©úB come about©ú©ú C come in©ú©ú D©úcome back 20.Julie went to the _____ to buy a pair of shoes . ©ú©úA shoes store©ú©úB©úshoe©ústore©ú©ú©úC shoe's store©ú©ú©ú©úD shoes' store 21 ." What's your reason ___ being late ? " " That's ____ my mother was ill ." ©ú©ú A of , why©ú©ú©ú B©úof , because©ú©ú©ú C©úfor , why©ú©ú©ú D for , because 22 . She's going up to Paris _____. A©úin three day's time©úB after three day's time©úC in three days' time©úD three days' time later 23 This sentence is different ____ that one . Can you tell the difference ___ them ? ©ú©ú©úA from, between©ú©ú©úB to , among©ú©ú©ú©ú©ú C with , between©ú©ú©ú D from ,©úfrom 24 . Her hair is ____.©ú A©úthe same colour as her mother©ú©ú B©úthe same colour as her mother's C same colour as her mother©ú©ú©ú©ú©ú©úD same colour as her mother's 25 .I don't ____ agree with you on that .©ú A©úvery©ú B quite©úC very much©úD©úrather 26.©úMany great man have risen from poverty ---- Lincoln and Edison, _______. ©ú©ú A instead©ú©ú©ú©úB©úfor example©ú©ú©ú©úC and so on©ú©ú©úD such as 27. Was the door of our office ______ last year ? ©ú©úA©úremained open©ú B stayed open©ú C kept opened©úD©úleft open 28 ." What doe your new friend look like ? " " _______." ©ú©úA He looks well©ú©ú©ú©ú©ú©ú©ú©úB He likes music very much ©ú©úC He is a handsome young man©ú©úD He is always ready to help others©ú 29. " Shall we go swimming ? " " Ok, I'll just go and get _____." ©ú©ú A to change©ú©ú©ú B to be changed©ú©ú©ú©ú C changed©ú©ú©ú©ú©ú©úD changing 30.It was below freezing point _____ . A©úall winter long©ú©úB all the winter long©ú C in all winter long©úD©úin all the winter long ¸ß¿¼Ó¢Óï¿ìËÙÔĶÁѵÁ· £¨3£©The Biochemistry of Hibernation©ú The biochemistry of hibernation may help save human lives£®During the long cold winter many of us struggle to keep warm while we wait for the warmth of spring£®But there are some animal going into a deep sleep during winter£® When an animal is hibernating in this way£¬its body temperature falls to nearly freezing£®The organs£¨Æ÷¹Ù£©of the animal's body almost stop working£®The heart beats only a few times a minute£®For example£¬the ground squirrel's heartbeat during hibernation slows from its normal 350 beats each minute to only 3 or 4£® Hibernating animals can lose as much as one half of their body weight during the sleep£¬and the body's need for food is sharply reduced£®No hibernating animal sleeps all winter without waking from time to time£®Hibernating squirrels awaken about 15 days£®Bats awaken every 30-40 days£®Scientists believe that these periods of waking and sleeping are controlled by a substance£¨ÎïÖÊ£©in the blood called HIT£¨hibernation inducing trigger¶¬ÃßÓÕ·¢¼Á£©£®Scientists have found that by putting small amounts of this substance into the brain of an animal£¬the animal's heartbeat begins to slow and the body temperature begins to fall£®This was true even for animal that do not hibernate£¬such as monkeys£®When HIT was put into a monkey's brain£¬its heartbeat slowed as much as 50 £¥£® The body temperature fell several degrees£¬and its interest in food disappeared£®Doctors believe that HIT£¬when it is better understood£¬might be used during operations on the heart or other parts of the body£®It could reduced the body'stemperature and slow the heartbeat to reduce bleeding£®The effect of HIT on a person'sinterest in food also might be used in helping those who want to lose weight£®And HIT might be used in space travel£®An astronaut sent to a distant planet or star might be able to hibernate for most of the trip£¬waking only when necessary£®©ú£¨Words£º330 Minutes£º5£®5£©©ú1£®During hibernation the ground squirrels heart beat©ú____ £®©ú A£®falls several times©úB£®slows from 350 to 120 beats a minute©ú C£®goes up from 3 or 4 to 350 beats a minute©úD£®reduces from its normal 350to 3or 4 beats a minute©ú 2£®During the winter sleep£¬hibernating animals can lose©ú____ of their body weight£® A£®1£¯2©úB£®1£¯3©ú C£®2£¯3©ú©úD£®1£¯4©ú 3£®What effect does the substance HIT have on hibernating animals£¿©ú A£®It has a chemical effect on them£®©úB£®It has a bad effect on them£®©ú C£®It has an effect on the rising of their body temperature£®©ú D£®It can control the periods of their waking and sleeping£®©ú 4£®Doctors believe that HIT might be used during operations because©ú____ £®©ú A£®it could make the patient sleep©ú B£®it could reduce the body's temperature and heartbeats to reduce bleeding©ú C£®it could make the sick feel less pain D£®it could keep the sick awake during the operation©ú 5£®HIT might be used in space travel ____ £® A£®to make the travel faster©úB£®to make the astronaut hibernate for most of the trip C£®to save fuel£¨È¼ÁÏ£©©úD£®to make the spaceship come back on time £¨3£©1-5©úDADBB ©ú |
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