PAGE4PAGELesson4數詞一、常考易錯數詞基數詞序數詞one,two,three,four,five,six,seven,eight,nine,tenfirst,second,third,fourth,fifth,sixth,seventh,eighth,ninth,tentheleven,twelveeleventh,twelfththirteen,fourteenthirteenth,fourteenthfifteen,nineteenfifteenth,nineteenthtwenty,forty,fifty,eighty,ninetytwentieth,fortieth,fiftieth,eightieth,ninetiethtwenty-one,thirty-threetwenty-first,thirty-thirdforty-four,fifty-fiveforty-fourth,fifty-fiftheighty-eight,ninety-nineeighty-eighth,ninety-ninthahundredahundredth二、數詞的用法1．確數：eighthundredstudents/fivethousandteachers/twomillionworkers概數：hundredsofstudents/thousandsofteachers/millionsofworkers（特別注意：twothousandofthestudents這些學生中的兩千個）2．表示編號或次序，用基數詞LessonTen=thetenthlesson(第十課)PageFive=thefifthpage(第五頁)Room105→Roomone0fiveBusNo.13→BusNumberThirteenTel.No.7655609→TelephoneNumberseven-six-doublefive-six-0-nine3.年份：2002:twentythousandandtwo;1976:nineteenseventy-six.日期：在12月1日:onDec.1st或onthefirstofDecember；在2002年11月8日:onNov.8th,2002.(Tip:有日用on，無日用in)時間：(1)鐘點+分鐘（順讀法）如：at11:56atelevenfifty-six(2)分鐘+to/past+鐘點（倒讀法）如：at4:30athalfpastfourat5:05atfivepastfiveat6:45atfifteentoseven(ataquartertoseven)4.小數的讀法：5.7→fivepointseven,0.16→zeropointonesix.5.“半”的表達: 1/2→half,半小時→halfanhour,1.5小時→oneandahalfhours或onehourandahalf6.序數詞前面加the時,表示順序,加a/an時表示“再一、又一”。如：Thethirdlessonisratherdifficult.(第三課相當難)Shallwereadthetextathirdtime?(我們把課文再讀第三遍,好嗎？)7．年代:inthe1990s(在二十世紀九十年代)年齡:inhisthirties(在他三十多歲時)inone’s+整十復數8．afive-weekholiday（5周的假期）anine-year-oldboy（9歲的男孩）9．分數：分子基數詞，分母序數詞。當分子大于1時，分母要用復數形式。如：2/3twothirds,1/5onefifth10.數詞＋more＝another＋數詞如：onemorebook=anotherbook,threemorebooks=anotherthreebooks（注意次數表達：once一次；twice兩次threetimes三次）情態動詞（+動詞原形）①表示猜測可能性時:must肯定,一定may可能can’t不可能maynot可能不②hadbetter(not)dosth.最好（不）做某事③havetodosth.不得不做某事④needsth./don’tneedsth.（不）需要某物needn’tdosth./don’tneedtodosth.不必做某事sthneeddoing/tobedone某事需要被做⑤牢記幾個回答能力：Canyouswimnow?Yes,Ican./No,Ican’t.Couldyouswimlastyear?Yes,Icould./No,Icouldn’t.征求許可：CanIborrowyourbike?Yes,youcan./No,youcan’t/mustn’t.CouldIsmokehere?Yes,youcan./No,youcan’t.MayIuseyourbike?Yes,youma