高中英语 Module5 Vocabulary and speaking 精品 外研必修1

外研版高一年级(必修1)Module5英语课件编辑pptVocabularyandspeaking

编辑ppt英语中基数词、序数词、分数、小数和百分数的读法编辑ppt1.基数词的读法：A.先说“几十”，再说“几”，中间用连字符。如：23—89—B.先说“几百”，再加and,再加末两位数（或末位数）。如：223—416—809—twenty-three

eighty-ninetwohundredandtwenty-threefourhundredandsixteeneighthundredandnine编辑pptC.1000以上的数先从后向前数，每三位数加一“,”（千分位）；第一个“,”号前为thousand;第二个“,”号前为million;第三个“,”号前为billion。如：1,001—4,000—9,743—174,301—750,000,000—onethousandandonefourthousandninethousand,sevenhundredandforty-threea(one)hundredandseventy-fourthousand,threehundredandonesevenhundredandfiftymillion编辑ppt2.序数词的读法序数词一般以与之相应的基数词加词尾-th构成，如：tenth（第十），但下面这些基数词在变序数词时，有特别的地方。如：A.one—two—three—five—eight—nine—twelve—firstsecondthirdfiftheighthninthtwelfth编辑pptB.以-ty结尾的词，要先变-y为-i，再加-eth。如：twenty—

forty—C.以one,two,three,five,nine收尾的多位数词，要照第一条方法变。如：twenty-one—twenty-two—thirty-five—ninety-nine—ahundredandfifty-three—twentiethfortiethtwenty-firsttwenty-secondthirty-fifthninety-ninthahundredandfifty-third编辑ppt基数词表示分子，序数词表示分母，除了分子是“1”的情况外，序数词要用复数。如：¼—2/3—7/9—5/12———one-fourthtwo-thirdsseven-ninthsfive-twelfthstwoandthree-fifthsthirtyandseven-eighths3.分数词的读法2353078编辑ppt一些特殊的表达法½—¼—¾—a/onehalfa/onequarterthreequarters4.小数的读法7.8—

0.4—

0.03—

0.125—

14.397—

sevenpointeightzeropointfourzeropointzerothreezeropointonetwofivefourteenpointthreenineseven编辑ppt5.百分数的读法27%—45%—86%—twenty-sevenpercent

forty-fivepercent

eighty-sixpercent编辑pptCanyousaythefollowinginEnglishcorrectly?1,0002,00012,000112,000796,000one

thousandtwothousandtwelve

thousandonehundred,twelve

thousandsevenhundred,ninety-six

thousand编辑ppt879,457eighthundred,seventy-ninethousand,fourhundredandfifty-seven

1,000,0009,000,00032,000,000212,000,000onemillionninemillionthirty-twomilliontwohundred,twelvemillion编辑ppt988,766,688ninehundred,eighty-eightmillion,sevenhundred,sixty-sixthousand,sixhundredandeighty-eight987,654,321ninehundred,eighty-sevenmillion,sixhundred,fifty-fourthousand,threehundredandtwenty-one编辑ppt1,000,000,000onebillion9,000,000,000ninebillion32,000,000,000thirty-two

billion564,865,000,000fivehundred,sixty-fourbillion,eighthundred,sixty-fivemillion编辑ppt978,876,675,467ninehundred,seventy-eightbillion,eighthundred,seventy-sixmillion,sixhundred,seventy-fivethousand,fourhundredandsixty-seven编辑pptLet’shaveamatchtoseewhocansaythefollowingnumberscorrectlyandquickly.765,847

sevenhundred,sixty-fivethousand,eighthundredandforty-sevenPractice编辑ppt2.756,980,000

sevenhundred,fifty-sixmillion,ninehundredandeightythousand3.345,567,887,987

threehundred,forty-fivebillion,fivehundred,sixty-sevenmillion,eighthundred,eighty-seventhousand,ninehundredandeighty-seven

编辑ppt4.897,786,000,576

eighthundred,ninety-sevenbillion,sevenhundred,eighty-sixmillion,fivehundredandseventy-six5.786,087,670,756

sevenhundred,eighty-sixbillion,eighty-sevenmillion,sixhundred,seventythousand,sevenhundredandfifty-six编辑ppt6.987,765,654,345

ninehundred,eighty-sevenbillion,sevenhundred,sixty-fivemillion,sixhundred,fifty-fourthousand,threehundredandforty-five

编辑pptReadthesequestionsaloudandsaytheanswers.Whatis½of6,000,000?2.Howmuchis35,246,000plus12,800,000?3.Whatis25%of200,000,000?threemillionforty-eightmillion,forty-sixthousand

fiftymillion编辑ppt4.Howmuchis260,408,396and5,284,700?

twohundred,sixty-fivemillion,sixhundred,ninety-threethousand,ninety-six5.Whatis¾of1,000,500,000?

sevenhundred,fiftymillion,threehundred,seventy-fivethousand

6.Whatis10%of800,000,000?

eightymillion编辑ppt1/51/61/74/7onefifthonesixthoneseventhfourseventhsCanyousaythefollowinginEnglishcorrectly?编辑ppt7/1097/111sevententhsninety-sevenonehundredandeleventhsforty-fiveeighty-sevenths总结:你能看出他们有什么特点吗？45/87分子用基数词,分母用序数词;分子大于1,分母的序数词需要加s。编辑ppt另外,还有几个特殊表达的情况:1/21/41/33/42/3onehalf

onequarteronethirdthreequarterstwothirds编辑pptNowlet’ssay:2/55/89/103/85/6Practicetwo-fifthsfive-eighthsnine-tenthsthree-eighths

five-sixths编辑pptCanyousaythefollowinginEnglishcorrectly?0.50.80.761.23pointfivepointeightpointsevensixonepointtwothree编辑ppt23.45100.3287.6757.564twenty-threepointfourfiveonehundredpointthreetwoeighty-sevenpointsixseven

sevenpointfivesixfour

编辑pptFinishExercise9onP93.Homework

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