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初二英语一轮复习:数词加减乘除的表示法

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  数词加减乘除的表示法

  1. “加”用plus,and或add表示;“等于”用is,make,equal等词表示。

  2+3=? 可表示为: 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.

  二加三等于五

  2. “减”用 minus或 take from表示

  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.

  十减去六等于四

  3. “乘”用time(动词)或multiply表示

  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.

  三乘以四等于十二

  4. “除”用divide的过去分词形式表示

  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.

  十六除以四等于四。

  五、分数表示法

  1. 分数是由基数词和序数词一起来表示的。基数词作分子,序数词作分母,除了分子是“1”以外,其它情况下序数词都要用复数形式。

  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. 当分数后面接名词时,如果分数表示的值大于1,名词用复数;小于1,名词用单数。

  1 1/2 hours 一个半小时(读作 one and a half hours)

  2 3/4 meters 二又四分之三米(读作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”的说法:指数用序数词,底数用基数词。

  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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