Tham khảo tài liệu 'oxford guide to english grammar part 37', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 23 NUMBERS AND MEASUREMENTS PAGE 246 21 twenty-one 100 a one hundred 22 twenty-two 102 a one hundred and two 30 thirty 164 a one hundred and sixty-four 40 forty 596five hundred and ninety-six 50 fifty 7 830 seven thousand eight hundred and thirty 60 sixty 1 000 000 a one million 70 seventy 1 000 000 000 a one billion 80 eighty 90 ninety NOTE a Be careful with these spellings fifteen eighteen forty fifty eighty. b We can use a or one before hundred thousand million etc. There s a hundred one hundred metres to go I ve told you a thousand times not to do that. Unemployment stands at one million four hundred thousand. A is informal. One is usual in longer numbers. We cannot leave out a or one. NOT I ve told you thousand times. c Hundred thousand million etc are singular except in the of-pattern. 3 d We use and between hundred and the rest of the number but not usually in the USA 304 7 . e We put a hyphen in twenty-one sixty-five etc but not before hundred thousand or million. f We can write a thousand as 1 000 or 1 000 or 1000 but not . g For the numbers 1100 1200 etc up to 1900 we sometimes say eleven hundred twelve hundred etc. The hostage spent over fourteen hundred days in captivity. h In British English one billion can sometimes mean 1 000 000 000 000. i We sometimes use alone dozen for 12. half a dozen eggs 6 eggs And in informal English we can use a couple for two. We ll have to wait a couple ofminutes. 2 Here are some examples of numbers in written English. freefor 10 days 450 million trees the last 2years in 24 other towns and cities 35 000 free air miles to be won aged2 to 11 inclusive an apartment for 6 see page 10 Sometimes numbers are written in words especially small numbers. one offour super prizes two bedrooms one double and one single 3 To express a large but indefinite number we can use dozens of hundreds of thousands of and millions of. There were hundreds of people in the square NOT eight hundreds of. A drop ofwater consists ofmillions of .
