英语情景口语:numbers数量

英语自学网

　　90 numbers
        　　words
        　　numbers amount count hundreds thousands millions dozen couple pair double
triple quadruple first second third fourth add plus minus deduct multiply divide
roughly approximately equal several
        　　phrases
        　　third time lucky
        　　have sixth sense
        　　in seventh heaven
        　　be second nature
        　　at the eleventh hour
        　　once bitten twice shy
        　　first impressions last
        　　beginner
        　　a; what’s the area of your country?
        　　B: it’s not very big. It’s a little over half a million square
kilometers.
        　　A; that sounds quite big! How many people live there?
        　　B; there are about 30 million people in my country. Most of them live in
the north.
        　　A: what’s the average income?
        　　B; that’s the really hard to say. I think most people earn about two
thousand dollars a month, if you convert the money from our currency into
dollars.
        　　A; so your country is fairly rich.
        　　B: I think we are richer than most countries, but not as rich as countries
in western Europe. Our biggest problem at the moment is unemployment, which is
roughly 8%. It has doubled over the last four years.
        　　A: unemployment in my country is a fraction of that.
        　　Intemp3ediate
        　　A: what’s “pi”?
        　　B: that’s the ratio of the circumference of a circle to its diameter, I
think.
        　　A; I see. What is that ratio exactly?
        　　B: it’s approximately 3.14, but the number continues forever. What’s the
diameter of your circle?
        　　A: it’s 10 centimeters, so the circumference should be 31.4
centimeters.
        　　B; ok. My next problem is to convert 10000 british pounds into us dollars.
What’s the exchange rate at the moment?
        　　A: according to the newspaper, the exchange rate is 1.85 dollars to the
pound.
        　　B: that means that 10.000 pounds will buy me 18.500 dollars.
        　　A: what’s the next question.
        　　B; fractions. What’s a quarter and an eighth? That’s three-eights. Easy.
The next question is “what are prime numbers?”.
        　　A: I can help you there. Those are numbers that cannot be created by
multiplying two whole numbers, apart from the number itself and 1, together.
        　　B; so, 1,2 and 3 are prime numbers, but 4 isn’t because 2*2=4.
        　　A: exactly. Anything else?
        　　B; how many seconds in an hour? 60 seconds multiplied by 60 minutes equals
3600 seconds altogether.
        　　A: you’ll be a mathematician one day.