四、加減乘除表示法
1.“加”用plus,and或add表示;“等於”用is,make,equal等詞表示。
例如:
2+3=? 可表示為: How much is two plus three?
2+3=5
Two plus three is five.
Two and three is equal
to five.
Two and three make five.
Two added to three
equals five.
If we add two to/and
three, we get five.
二加三等於五。
2.“減”用minus或 take from表示
例如:
10-6=? How much is ten minus
six?
10-6=4
Ten minus six is four.
Take six from ten and
the remainder is four.
Six (taken) from ten is
four. 十減去六等於四。
3.“乘”用time(動詞)或multiply表示
例如:
3X4=? How much is three times four?
3X4=12
Three times four is/are
twelve.
Multiply three by four,we get twelve.
Three multiplied by
four makes twelve.
三乘以四等於十二。
4.“除”用divide的過去分詞形式表示
例如:
16÷4=? How much is sixteen divided by four?
16÷4=4
Sixteen divided by four
is four.
Sixteen divided by four
equals/gives/makes four.
十六除以四等於四。
五、分數表示法
1.分數是由基數詞和序數詞一起來表示的。基數詞作分子,序數詞作分母,除了分子是“1”以外,其他情況下序數詞都要用複數形式。
例如:
3/4 - three
fourths或 three
quarters
1/3 - one
third或a third
24/25 - twenty-four
twenty-fifths
3 1/4 - three and one fourth或 three and one quarter
1/2 - a
half
1/4 - one
quarter或a quarter
1 1/2 - one
and a half
1 1/4 - one
and a quarter
2.當分數後面接名詞時,如果分數表示的值大於1,名詞用複數;小於1,名詞用單數。
例如:
1 1/2 hours 一個半小時(讀作 one and a half hours)
2 3/4 meters 二又四分之三米(讀作two and three-fourths
meters)
4/5 meter 五分之四米
5/6 inch 六分之五英寸
3.表示“n次方”的說法:指數用序數詞,底數用基數詞。
例如:
10的7次方 the seventh power of ten(ten to the seventh
power)
6的10次方 the tenth power of six(six to the tenth power)
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