Module 5 A Lesson in a Lab--Speaking and vocabulary

课件20张PPT。课件课时设计Period 1: Introduction & Reading and
Vocabulary
Period 2: Vocabulary and Speaking &
Vocabulary
Period 3: Grammar 1 & Grammar 2
Period 4: Listening and Writing & Function
Period 5: Pronunciation & Everyday English &
Cultural Corner & TaskVocabulary and Speaking & Vocabulary英语中基数词、序数词、分数、小数和百分数的读法1.基数词的读法：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-ninetwo hundred and twenty-threefour hundred and sixteeneight hundred and nineC. 1,000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— one thousand and onefour thousandnine thousand, seven hundred and forty-threea (one) hundred and seventy-four thousand, three hundred and oneseven hundred and fifty million2. 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—firstsecondthirdfiftheighthninthtwelfthFraction We write1/5
1/6
1/7
4/7We sayone fifth
one sixth
one seventh
four sevenths7/10
97/111seven tenths
ninety-seven one hundred and elevenths
45/87forty-five eighty-sevenths总结: 你能看出他们有什么特点吗？分子用基数词,分母用序数词;分子大于1时,分母的序数词后需要加s。另外, 还有几种特殊表达的情况:
1/2
1/4
1/3
3/4
2/3
A half is the same as 50 percent.one half
one quarter
one third 33.33r % r: recurring
three quarters
two thirds 66.66%50%
25%75%百分数： percentage5) 百分数的读法
27% —
45% —
86% —twenty-seven percent forty-five percent eighty-six percentCan you say the following in English correctly?
1,000
2,000
12,000
112,000
796,000
one thousandtwo thousand
twelve thousand
one hundred and twelve thousandseven hundred and ninety six thousand879,457
eight hundred and seventy-nine thousand, four hundred and fifty-seven
1,000,000
9,000,000
32,000,000
212,000,000one million
nine million
thirty-two million
two hundred and twelve million988,766,688nine hundred and eighty-eight million, seven hundred and sixty-six thousand, six hundred and eighty-eight
987,654,321
nine hundred and eighty-seven million, six hundred and fifty-four thousand, three hundred and twenty-one1,000,000,000one billion
9,000,000,000nine billion
32,000,000,000thirty-two billion564,865,000,000
five hundred, sixty-four billion, eight hundred, sixty-five million
978,876,675,467nine hundred and seventy-eight billion, eight hundred and seventy-six million, six hundred and seventy-five thousand, four hundred and sixty-seven PracticeNow let’s say: 2/5 5/8 9/10 3/8 5/6two-fifthsfive-eighthsnine-tenthsthree-eighthsfive-sixthsCan you say the following in English correctly?0.5
0.8
0.76
1.23point five
point eight
point seven six
one point two three23.45
100.32
87.675
7.564twenty-three point four fiveone hundred point three two eighty-seven point six seven five seven point five six four pointpointpointpoint总结：小数点读作pointRead these questions aloud and say the answers.What is ? of 6,000,000?
2. How much is 35,246,000 plus 12,800,000?
3. What is 25% of 200,000,000?
Three million.Forty-eight million, forty-six thousand. Fifty million.4. How much is 260,408,396 and 5,284,700?
Two hundred, sixty-five million, six hundred, ninety-three thousand, ninety-six.
5. What is ? of 1,000,500,000?
Seven hundred, fifty million, three hundred, seventy-five thousand.
6. What is 10% of 800,000,000?
Eighty million.