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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×öijÊÂ
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 true©ú ʵÏÖ©ú©ú©ú©ú©ú I am sure your dream will come true one day .
©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 ÒòijһԭÒò/ 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
20.Everyday English:
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
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