第七次課六年級數(shù)詞1課件傳

1、小英-王歡第三章 數(shù)詞seven kidsBus Threethe first prize 定義： 表示數(shù)目多少或 順序的詞叫數(shù)詞益智文化基數(shù)詞考點01：基數(shù)詞的表示方法one pentwelve clocksfour books1. 112的基數(shù)詞如下： one1、two2、three3、four4、five5、six6、seven7、 eight8、nine9、ten10、eleven11、twelve12 表示數(shù)目多少的 數(shù)詞叫基數(shù)詞Im eighteen now.2. 1319,由基數(shù)詞+后綴-teen構成： thirteen13、fourteen14、fifteen15、 sixte

2、en16、 seventeen17、eighteen18、nineteen19She spent seventeen years as a teacher.Thirty of them are Party members.3. 2090等十位數(shù)均由基數(shù)詞+后綴-ty構成： twenty20、thirty30、forty40、fifty50、 sixty60、seventy70、eighty80、ninety90There are fifty stars on the American flag.There are twenty-six letters in English.4. 幾十幾由表示幾

3、十的基數(shù)詞+表示幾的基數(shù)詞 構成，中間須有連字符“-”There are fifty-six peoples in our country.one hundred5. 百位數(shù)的讀法：由基數(shù)詞+hundred構成，如 包含十位數(shù)及個位數(shù)，中間用and連接four hundred and twenty-fivethree hundred and seven6. 百位數(shù)的讀法：由基數(shù)詞+thousand構成， 如包含百位，十位及個位按照百位讀法two thousand and eightthirty-five thousand four hundred and fifty-sixten thousa

4、nd one hundred and one7. 百萬位數(shù)的讀法：由基數(shù)詞+million構成，如 包含千位，百位，十位及個位按照千位數(shù)讀法one millionthree million four hundred and twenty-one thousand five hundred and fifty-onetwo million three hundred thousand8. 千萬位數(shù)的讀法：由基數(shù)詞+billion構成，如 包含百萬，千位，百位，十位及個位按照百 萬數(shù)的讀法sixty billioneight thousand billionfive hundred billion

5、讀出下列數(shù)字的英文表達9 1886 90306 6714321即學即練nineninetyeighty-sixeighteensix hundred and seventy-onethree hundred and sixfour thousand three hundred and twenty-one讀出下列數(shù)字的英文表達76543211987654321即學即練seven million six hundred and fifty four thousand three hundred and twenty-oneone billion nine hundred and eighty-s

6、even million six hundred and fifty-four thousand three hundred and twenty-one-Excuse me,how does this number 20135 read?- It reads_.A. twenty thousands one hundred and thirty-fiveB. twenty thousand one hundred thirty-fiveC. twenty thousand one hundred and thirty-fiveD. twenty thousands one hundred t

7、hirty-five即學即練Summary考點02：時間表示法12:00twelve oclocksix thirty6:30nine fifteen9:151. 順時針讀法，即按順序讀出幾點幾分pastto30分幾點差幾分幾點過幾分5:05five past fivethirty/half past six 6:30fifteen/a quarter past nine 9:1515分鐘可用a quarter表示30分鐘可用half表示2. 逆時針讀法，表示幾點過幾分： 萬能公式：分鐘+past+時 （分鐘30）5:35twenty-five to sixfifteen/a quarter

8、to six 5:45two to six5:5815分鐘可用a quarter表示30分鐘可用half表示3. 逆時針讀法，表示幾點差幾分： 萬能公式：（60-分鐘）+to+（時+1） （分鐘30）寫出下列時間的英文表達 8：30 5:28 9:10 6:45 2:30即學即練eight thirtynine ten five twenty-eighthalf past eighttwo thirty six forty-fivea quarter past seventwenty-eight past fiveten past ninehalf past twoTips: 說差可用to,

9、說過只用past。1.-“What time do you usually get up, John?” -“I usually get up at _.”half past six B. half to six C. half after six 2. Its already 7:40 now. When will the film start? _. We still have five minutes. A. A quarter to seven B. Seven past forty-five C. A quarter to eight即學即練Summary時間類型表示法例讀法整點基數(shù)

10、詞 + oclock1:0030分鐘分鐘 + past + 時 2:10= 30 分鐘half + past + 時3:3030分鐘（60-分鐘）+ to +（時 + 1）4:40= 15 分鐘= 45 分鐘5:156:45簡化法按順序讀基數(shù)詞7:50one oclockten past twohalf past threetwenty to fivea quarter past fivea quarter to sevenseven fiftya quarter + past + 時a quarter + to + （時 + 1）Tips: 具體時刻前用介詞atSummary考點03：表示不

11、確定的數(shù)目There are two hundred students in the hall.There were thousands of people in the race. 兩百（確定的數(shù)目） 成千上萬的（不確定的數(shù)目） hundred thousand million billion基數(shù)詞 +表示確定的數(shù)目Tips: 有數(shù)字，無s無of hundreds thousands millions billions+ of表示不確定的數(shù)目Tips: 無數(shù)字，有s，加of常見的不確定數(shù)目的表達有：hundreds of 成百上千的thousands of 成千上萬的millions of

12、數(shù)以百萬的1. We planted trees last year. A. hundreds of B. hundred of C. five hundreds D. five hundred of2. Jackie Chan has donated_ dollars to charity. He is an example to us all. A. thousand B. thousands C. thousand of D. thousands of 即學即練3. _ of volunteers will be needed for 2014 International Horticu

13、lture Exposition in Qingdao. Lets go and _ them. A. Thousands, join B. Thousand, be a member of C. Three thousand, take part in D. Thousands, be in即學即練4. How many teachers are there in your school? About four_. A. hundreds of B. hundred C. hundreds5._volunteers sent books to a mountain village schoo

14、l on Childrens Day. A. Two hundreds of B. Two hundred of C. Two hundreds D. Two hundred即學即練Summary考點04：表示人的不確切年齡He became a professor in his fifties.Our English teacher is in her thirties.數(shù)詞表示人不確切的年齡，用幾十的復數(shù)形式常用結構：in ones +幾十的復數(shù)形式 His father joined the Party in_ and died in _. A. 1930s; his fifty B.

15、1930; his fifty C. the 1930; fifty D. the 1930s ;his fifties即學即練Tips:in ones +幾十的復數(shù)形式表示“在某人幾十歲的時候”Summary考點05：加減乘除表示法+=+=One plus one is two.Two plus two is four.1.“加”用plus，and表示； “等于”用is，make，equal等詞表示Ten minus six is four.Take six from ten and the remainder is four.2.“減”用minus或take from表示-=Three t

16、imes four is twelve.Multiply three by four, we get twelve.3.“乘”用time（動詞）或multiply表示+=Sixteen divided by four is four.4.“除”用divided表示，常用結構：divided by= We all know that two and one is three. Here “is” means“_”. A. = B. % C. D. 即學即練 -If a=4,b=5,whats the answer to the question “a+2ab+1=?” -_. A. Forty

17、B. Forty-five C. Twenty-three D. One hundred and twenty-one即學即練Summary考點06：數(shù)詞表示小數(shù)four point nine sixone thousand and one point five four.thirty-four point zero eight “.” point小數(shù)點前的數(shù)按照基數(shù)詞讀，小數(shù)點讀作point。小數(shù)點后的數(shù)，按照個位基數(shù)詞逐個讀。 寫出下列數(shù)字的表達 7.29 10.56 628.1345即學即練seven point two nineten point five sixsix hundred

18、 and twenty-eight point one three four fiveSummary考點07：數(shù)詞表示百分數(shù) “%” 讀作 percentone percentfifty percentone hundred percent百分數(shù)讀法：基數(shù)詞+percent 寫出下列數(shù)字的表達 5% 52% 87% 126%即學即練five percentfifty-two percenteighty-seven percentone hundred and twenty-six percentSummary益智文化真題演練1. We get up at _ in the morning an

19、d go to bed at_ at night. A. fifteen past six; four minute to nine B. a quarter past six; four to nine C. a quarter passed six; four-minute to nine D. six fifteen; four to nine oclock 2. The Mississippi is _ kilometers long. A. six thousand, two hundred, sixty-two B. six thousands, two hundreds and sixty-two C. six thousand and two hundreds and sixty-two D. six thousand, two hundred and sixty-two真題演練3. It took _ people three months to build this great building. A. two hundreds B. hundred of C. hundreds of D. two hundred of4. Tonys mum looks young and beautiful. Its hard