懂你英语Level4上课讲义.docx
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懂你英语Level4上课讲义
懂你英语Level-4
L4Unit1-1Listening旅游
Christinaisonatwo-weeksvacation.Thisisthefirstvacationshehashadforalongtime.Thelastvacationshetookwasmorethan2yearsago.NowsheisvisitingafriendinSanFrancisco.Herfriendandherhusbandarelivingnearthecenterofthecity.Heworksforastart-upcompanyinSiliconValley.Whileheisworking,sheworkspart-timeatadepartmentstore.
Christianahasn’tseenherfriendforalongtime.Thelasttimetheysaweachotherwas3yearsago.Atthattime,theywerebothworkingatadepartmentstore.ThenChristinaquitherjobandstartedherownbusiness.Shedesignswomen’sclothing.Shehas2employeesnowandhercompanyisslowlygrowing.
ChristinahascometoSanFranciscobyherself.Herhusbanddidn’tcomebecausehehastowork.Hetriedtostartacompany2yearsago,butitdidn’tworkout.Hiscompanyfailedafteronlyafewmonths.Sonowhe’sworkingatanothercompanyandsavingmoney.Oncehesavesenoughmoney,heplanstostartanothercompany.Hedoesn’twanttogiveup.
ThisisthesecondtimeChristinahasbeentoSanFrancisco.Thefirsttimewaswhenshewasahighschoolstudent.Thatwasmorethan10yearsago.DuringthattripshewasonlyinSanFranciscoforafewdays.AfterthatshewenttoLosAnglesandNewYork.Thistimesheandherfriendplantorelaxandhavefun.
Christinaarrivedtwodaysago,thedaybeforeyesterday.Herfriendmetherattheairportanddrovehertoherapartment.Herapartmentisjustnorthoftheairport,about20minutesfromSanFrancisco.It’sasmallapartment,butit’sonahillandithasagreatview.Yesterday,theywentdowntownandrodethecablecars.Christinawassurprisedbyhowsteepthehillsare.Thentheywalkedalongtheoceanandatelunchattheseafoodrestaurant.Fromtherestaurant,theycouldseetheGoldenGatebridge.
Tomorrowthey’replanningtodrivetoYosemiteNationalPark.Bycarit’sabout4hoursaway.Christinahasneverbeentherebefore,sosheisexcited.Shehasheardthattheparkisverybeautiful.HerfriendhasbeentoYosemiteseveraltimes.Shesaysit’soneofthemostbeautifulplacesintheworld.Christinajusthopesthatherfriendisagooddriver.
L4Unit1-1vocabulary伤病和地貌地形
Headachecanbeverypainfulandcanlastforalongtime.Ifyouhaveheadacheyourheadhurts.
Aheadachecanbecausedbyaninjurytothehead.
Asprainedanklecanbesopainfulthatyoucan’twalk.Someonewithasprainedanklemayneedtousetocrutchestowalk.
Ifyouhaveasorethroat,itmaybepainfultoswallow.Asorethroatcanbecausedbyvirusesorbacteria.
Aburnisaninjurytotheskincausebyfireorheat.Ifyougettooclosetoafire,youwillbeburned.
Anearacheisasharp,dullorburningpainintheear.Commoncausesofanearacheincludeaninfection,achangingairpressureorwaterintheear.
Mountainsarelandformshigherthan2000feetorabout600metersabovesealevel.Hillsarelikemountain,butnotastall.Mountainsareformedbytheforcesdeepwithintheearthandaremadeofmanytypesofrocks
Riversarestreamofwaterthatusuallybeginatmountainsandflowintothesea.Manyearlycitieswerebuiltalongsiderivers.
Mostoftheworld’swaterisintheocean,whicharethelargebodiesofsaltwater.Theoceansarealsoanimportantsourceofoxygen.
ThePacificOceanisthelargestanddeepestocean,coveringmoreareathanallthecontinentsputtogether.
Desertsareareasoflandthatreceivelittleornorainfall.Theamountofrainfallinsomedesertsissolowthatonlyafewplantscansurvive.
Deserttemperaturescanrangefromcoldatnighttoveryhotduringthedaytime,oftenabove120degreesF.
Avalleyislow,relativelyflatareabetweenhillsandmountains,oftenwiththeriverrunningthroughit.Somevalleysareformedbyflowingriverandothersareformedbyglaciers.
L4Unit1-1dialogue谈论吃饭和预约
M:
Haveyoueatenyet.
F:
Not,Ihaven’tandI’mhungry.
M:
Metoo.Let’sgooutfordinner.
F:
Whereto
M:
Whataboutjoe’sItalian.
F:
Howmanytimeshaveyoueatenthere.
M:
Ieattherealot.It’soneofmyfavoriteplaces.
F:
Iwenttheretwoweeksagoandtheservicewasterrible.
M:
Really,thenlet’sgosomeplaceselse.Whatdoyousuggest?
F:
HowabouttheroyalIndian.It’snotfarfromhere.
M:
I’veneverheardofit.Isitgood?
F:
Yes,IhavebeenthereseveraltimesandI’veneverbeendisappointed.
M:
Ok,let’stryit.I’venevereatenIndianfoodforalongtime.
F:
Youwon’tbedisappointedandthepricesarereasonable.
M:
Ah,soyoumeanI’mgoingtopay.
F:
Well,thatwouldcertainlybenice.
M:
Whataboutreservations.
F:
Ifyougetthereearlyenough,wewon’tneedthem.
M:
Ihopeyou’reright.
F:
Don’tworry,ifwehavetowait,I‘llpaythebill.
L4Unit1-2Listening旅游2
Today,Christinaandherfriendareenjoyingthemselves.ThismorningtheygotupveryearlyanddroveoutofSanFrancisco.TheycrossedtheBayBridgebeforetheearlymorningcommuteanddrovesouth.Becauseitwassoearly,therewerealmostnotcars.
Afterdrivinganhourandahalf,theystoppedtohadbreakfast.Theyorderedpancakesandcoffee.Theyalsohadsomefreshfruits.Whentheyfinishedeating,itwas7o’clock.Thentheygotbackintothecaranddrovesouth.Christinawantedtolistentomusic,sotheyturnedontheradio.Anhourlatertheystoppedforgas.Theynoticedthattherewasalsoachargingstationforelectriccars.
It’snow1:
15andtheyareinYosemitePark.Theyhavebeentherefortwohours,since11:
15.TheyarelookingattheYosemitefalls,whichisthehighestwaterfallinthepark.Thewaterdropsatotalof740metersfromthetopofupperfalltothebaseofthelowerfall.
Inanother15minutestheyplantoeatlunchatamagnificentoldhotelinthepark.Itwasbuiltin1927andhasagreatview.Theywantedtostaythere,buttheycouldn’tgetreservation.Togetaroomatthathotelyouusuallyneedtomakereservationsseveralmonthsinadvance.
Theyplantostayintheparkuntilaround4o’clock.Bythentheywillhavebeenintheparkfornearly5hours.Thenthey’llgetbackintothecaranddrivebacktoSanFrancisco.Theyplantoeatdinnersomewherealongtheway.Ifthetrafficisn’ttoobad,theyshouldbebackinSanFranciscoby10o’clock.
EarlytomorrowmorningtheyaregoingtocrosstheGoldenGateBridgeandgonorthalongthecoast.Fromsomeplaces,youcanlookoutontheoceanandseewhalesandothersealife.Christinahasneverseenawhalebefore,soshe’slookingforwardtoit.Andtomorrownighttheyhavesomethingspecialplanned.Theyaregoingtowatchabaseballgame.Christinahasneverseenabaseballgame,butshehasheardthatitisverypopularintheUS.AndtheSanFranciscobaseballteamisoneofthebest.
L4Unit1-2vocabulary力学、几何
Aforceisapushorapullontheobject.Aforcechangesthemotionofamovingobject.
Aforcecanbestrongorweakanditalwayshasadirection.
Theearthisaplanetthatgoesaroundthesuninthecircularorbit.Thespeedofitsmotiondoesn’tchangeandthedirectionofitsmotiondoes.Theearthhasalayerofgasaboveitssurface,whichhelpstosupportlife.
Atomsarethebuildingblocksofmatter.Atthecenterofanatomisitsnucleus,whichhasapositiveelectriccharge.Outsidethenucleusareelectrons,whichhaveanegativecharge.
Asteroids(小行星)andcomicsareobjectthatorbits(轨道)oursun,butaresmallerthanplanets.Asteroidthatpassclosetotheeartharecalledthenear-earthobjects.Thelayerofgases,justabovetheearthsurface,isouratmosphere.Theatmosphereismadeupofgases,suchasoxygenandnitrogen.Withoutanatmosphere,therewouldbenotlifeonearth.
Thetwolinesontheleftintersect(横断)eachotheratarightanglewhichis90degrees.The2linesontherightareparallel,whichmeanstheynevercross.
Theadjacentsidesofrectangleareperpendicular,whichmeanstheymeetata90-degreeangle.Theoppositesidesoftherectangleareequalaparallel,whichmeanstheynevercross.Theareaofarectangleisthelengthtimesthewidth.
Acircleisthe2dimensional(尺寸的)figureswithradius(半径)andcircumferencewhichisthedistancearoundthecircle.TheareaofthecircleisπRsquare,whereristheradiusandPiistheratioofthecircle’scircumferencetoitsdiameter.
Asphereisa3dimensionalfigurewiththearatioandvolume,whichisthethree-fourthπRcube(立方体).Allpointsonthesurfaceofthesphereareequidistant(等距离的)fromitscenter.
Arectriangleisa2dimensionalfigurewith3sides,2ofwhichareperpendicular.Tofinditsarea,multiplythelengthofthe2perpendicular(垂直的)sides,AandBanddividedby2,Aequates(相等)onehalfAB.
Theelectricforcebetweenthenucleusandtheelectronsholdstheatomtogether.
Aforcecanincreaseordecreasethespeedofanobject,anditcanchangethedirectionofmotion.
L4Unit1-2dialogue
M:
Haveyoufinishedeatingyet.
F:
Not,Ihaven’t.Whyareyouinsuchahurry.
M:
I’msorry,butyouaresuchasloweater.
F:
Asloweater?
WellItrytoenjoymyfood.Youjusteatandswallow.Idon’tseehowyoucaneventasteit.
M:
Ok,I’msorry.DoyoumindifIgetanotherglassofwine.
F:
No,goahead.Idon’twantyoutositthereputtingpressureonme.Ithoughtweweregoingtohavearelaxingevening.
M:
Yes,youareright.I’dliketorelax,butIhadalotonmymind.
F:
Whatcreated?
M:
Yes.itis.I’vebeengettingsomestrangeemailsfrommyboss.Hewantsmetocutdownonmyexpenses.Maybehewantstofireme.
F:
Isbusinessbad?
M:
Yes,itis.ButIdon’twanttotalkaboutit.
F:
Ok,butI’magoodlistener.Youcantellmeifyo