Unit3ProtectingourselvesGrammarandUsage1.Sometimes,thetopicsentencefollowsahook,whichisasentenceintendedtograbreaders’attention.(Page40)hook:noun[C]acurveddeviceusedforcatchingorholdingthings,especiallyonefixedtoasurfaceforhangingthingson在文中引申为吸引读者注意的词句acoat/picturehookaboathookafishhookintend:tohaveasaplanorpurpose:[+toinfinitive]WeintendtogotoAustralianextyear.SomehowIoffendedhim,whichwasn'twhatI'dintended.[+object+toinfinitive]Idon'tthinksheintendedmetoheartheremark.Thecourseisintendedforintermediate-levelstudents.Itwasintendedasacompliment,honestly!2.Thebeginningparagraphshouldcapturereaders’attentionandkeeptheminterestedinreadingthetext.(Page40)capture:(1)Ifsomethingcapturesyourimaginationorattention,youfeelveryinterestedandexcitedbyit:TheAmericandrivetolandamanontheMooncapturedtheimagination/attentionofthewholeworld.(2)totakesomeoneasaprisoner,ortotakesomethingintoyourpossession,especiallybyforce:Twoofthesoldierswerekilledandtherestwerecaptured.Rebelforcescapturedthecityafteraweek-longbattle.(3)torepresentordescribesomethingveryaccuratelyusingwordsorimages:Itwouldbeimpossibletocaptureherbeautyinapainting.(4)torecordortakeapictureofsomethingusingacamera:Apasser-bycapturedthewholeincidentonfilm.3.Theyexpandontheideapresentedinthetopicsentence.(Page40)expand:verb[IorT]toincreaseinsize,numberorimportance,ortomakesomethingincreaseinthisway:Theairintheballoonexpandswhenheated.Theyexpandedtheirretailoperationssignificantlyduringthe1980s.expandonsthtogivemoredetailsaboutsomethingyouhavesaidorwritten:Shementionedafewideas,butshedidn'texpandonthem.4.Teachersshouldteachstudentsnottodiscriminateagainstpeoplewiththedisease.(Page41)discriminate:verb[I]totreatapersonorparticulargroupofpeopledifferently,especiallyinaworsewayfromthewayinwhichyoutreatotherpeople,becauseoftheirskincolour,religion,sex,etc:Shefeltshehadbeendiscriminatedagainstbecauseofherage.Inordertoincreasethenumberoffemalerepresentatives,theselectioncommitteedecidedtodiscriminateinfavourofwomenforthreeyears.用心爱心专心discriminationnoun[U]racial/sexdiscrimination用心爱心专心