Thursday, September 8, 2011

หลักการการเขียนตัวเลขในภาษาอังกฤษ

สวัสดีครับ วันนี้เอาคำศัพท์วุ่นๆ เกี่ยวกับตัวเลขมาฝาก มีมากพอสมควร ก็ลองๆ เลือกอ่านเลือกดู เฉพาะที่จำเป็น หากมีเวลาจำกัด แต่ถ้ามีเวลาเยอะๆ ก็ลองดูทั้งหมดได้ก็จะดีครับ สำหรับเป็นเอกสารอ้างอิง หรือตัวช่วยเวลาคิดไม่ออก บอกไม่ถูก VOCABULARY:

hundred, thousand, million, billion, trillion, buck, cent, dime, divided by,
dollar, equals, greater than, how much, less than, minus, nickel, numbers,
penny, plus, right /correct, square root, times, wrong /incorrect

CARDINAL NUMBERS ก็จำนวนนับนั้นแหละครับ เช่น 1 2 3 เป็นต้น

0 zero 1 one 2 two 3 three 4 four
5 five 6 six 7 seven 8 eight 9 nine
10 ten 11 eleven 12 twelve 13 thirteen 14 fourteen
15 fifteen 16 sixteen 17 seventeen 18 eighteen
19 nineteen

20 twenty 30 thirty 40 forty 50 fifty
60 sixty 70 seventy 80 eighty 90 ninety

21 twenty one 38 thirty eight 66 sixty six
91 ninety one

100 one hundred 200 two hundred
145 one hundred AND forty five 702 seven hundred and two

Each increasing magnitude of one thousand is separated by a comma: "," .

1,000 one thousand 2,000 two thousand
1,100 - 1,900 eleven hundred, twelve hundred... nineteen hundred
1,257 one thousand two hundred and fifty seven
3,088 three thousand and eighty eight
2,001 two thousand and one

10,000 ten thousand
34,598 thirty four thousand five hundred and ninety eight

100,000 one hundred thousand
598,222 five hundred and ninety eight thousand two hundred and twenty two

4,000,000 four million*
368,000,000 three hundred and sixty eight million
7,000,000,000 seven billion
8,000,000,000,000 eight trillion

*Americans say: "four million". The British say: "four millions",
with the "s" for plural

ORDINAL NUMBERS: ลำดับที่ ในภาษาอังกฤษ มีหลักเกณฑ์หลักการที่ต่างจากภาษาไทยนะครับ เริ่มจาก ลำดับ 1 2 และ 3 จากนั้นก็จะใช้ th ต่อท้าย รวมทั้ง 11 12 และ 13 แต่ ตั้งแต่ 20 ขึ้นไปจะต่อท้ายด้วย st nd และ rd นะครับ

1st first 2nd second 3rd third 4th fourth
5th fifth 6th sixth 7th seventh 8th eighth
9th ninth 10th tenth

11th eleventh 12th twelfth 13th thirteenth
14th fourteenth 15th fifteenth 16th sixteenth
17th seventeenth 18th eighteenth 19th nineteenth

>> The "y" of "twenty", "thirty", "forty", etc. is changed to "i" before the "eth":

20th twentieth 30th thirtieth 40th fortieth
50th fiftieth 60th sixtieth

21st twenty first 22nd twenty second 33rd thirty third
54th fifty fourth 75th seventy fifth 46th forty sixth
57th fifty seventh 88th eighty eighth 99th ninety ninth

100th hundredth
1,000 thousandth
1,000,000 millionth
1,000,000,000 billionth

388th three hundred and eighty eighth

DATES: การเขียนวันที่

-When is Christmas?
Christmas is December twenty fifth.
-When is American Independence Day?
It is July 4th.
or: It is the fourth of July.
-What is the date of international Labor Day?
Labor Day is May 1st.
-What year did World War Two end?
It ended in nineteen forty five.
-What year were you born?
I was born in nineteen fifty eight.

FRACTIONS: เศษส่วน ข้างหน้าอ่านแบบตัวเลข ส่วน ข้างหลังอ่านเป็น ลำดับที่

1/2 one half
1/3 one third
2/3 two thirds
3/5 three fifths
16/83 sixteen eighty thirds

In numbers of decreasing magnitude, whole numbers are separated by a
period: "." from fractions.

1.5 one point five
0.6 zero point six, or: oh point six (only in spoken English)
592.66 five hundred and ninety two point six six
3.1416 three point one four one six*

*XXX Not: three point one thousand four hundred and sixteen

= equals/is + plus/and - minus/less/negative
x times / divided by > is less than
< is greater than % percent
3 x 3 three squared
9 = ? x ? What is the square root of nine?
3 x 3 x 3 three cubed / three to the third power
8 = ? x ? x ? What is the third/cube root of eight?
3 x 3 x 3 x 3 three to the fourth (power)
16 = ? x ? x ? x ? What is the fourth root of sixteen?

? = 1 + 1 How much is one plus one? / What is one and one? อันนี้หนึ่งบวกหนึ่งเป็นเท่าไหร่
1 + 1 = 2 One plus one equals two. / One and one is two.*
? = 2 x 16 What is / How much is two times sixteen?
2 x 16 = 32 Two times sixteen is thirty two.
10 - 15 = -15 Ten minus fifteen equals negative fifteen/minus fifteen.

XXX Not: "One and one ARE two"

AMERICAN MONEY VOCABULARY: จำนวนเงิน ๆๆๆๆ

$1.00 a dollar / a buck $0.01 a cent หรือเรียกว่า บั๊ค ก็ได้ด้วยนะ
$50.00 fifty dollars / fifty bucks
$29.99 twenty nine dollars and ninety nine cents / twenty nine ninety nine
$1,000 a grand $10,000 ten grand

AMERICAN COINS: เศษสตางค์ หรือตั้งค์ทอน ๆๆๆๆ

$0.50 a half dollar $0.25 a quarter
$0.10 a dime $0.05 a nickel $0.01 penny
penny 1 เซ็นต์
nickel 5 เซ็นต์
dime 10 เซนต์


EXERCISES: มีเวลาก็ลองทำแบบฝึกหัดเร็ว ๆๆ
Write out the following numbers.

0. 88
eighty eight
1. 298
2. 312
3. 505
4. 8,629
5. 90,048
6. 435,666
7. 60,000,000
8. 1,000,000,000
9. 5,000,000,000,000
10. 0.8
11. 3,414.543
12. 33.333

Write the questions and the answers.

0. 36 + 45 = ?
What is thirty six plus forty five?
Thirty six plus forty five is eighty one.
13. 100 - 50 = ?
14. 10 + 20 + 12 = ?
15. 6 x 8 = ?
16. 10/4 = ?
17. 15/2 = ?
18. 1/4 = ? %

Write out the American money amounts:

0. $16.99
Sixteen dollars and ninety nine cents
19. $45.00
20. $0.29
21. $100.50
22. $2.50
23. $2,000
24. $3,000,000
25. $10.00

POSSIBLE ANSWERS TO THE QUESTIONS:

1. two hundred and ninety eight
2. three hundred and twelve
3. five hundred and five
4. eight thousand six hundred and twenty nine
5. ninety thousand and forty eight
6. four hundred and thirty five thousand, six hundred and sixty six
7. sixty million
8. one billion
9. five trillion
10. zero point eight
11. three thousand four hundred and fourteen point five four three
12. thirty three point three three three
or:
thirty three and a third
13. How much is one hundred minus fifty?
One hundred minus fifty is fifty.
14. How much is ten plus twenty plus twelve?
Ten plus twenty plus twelve is forty two.
15. How much is six times eight?
Six times eight is forty eight.
16. How much is ten divided by four?
Ten divided by four is two and a half.
17. How much is fifteen divided by two?
Fifteen divided by two is seven point five.
18. What percentage is one fourth?
One fourth is twenty five percent.
19. forty five dollars
20. twenty nine cents
21. one hundred dollars and fifty cents
22. two fifty
23. two thousand dollars
24. three million bucks
25. ten bucks
credit:http://www.easyenglish.com/lesson.asp?numbers.txt

No comments:

Post a Comment