5+6=11读作:Five and/plus six is/are/makes/make/equal/equals eleven.
11-5=6读作:Eleven minus five equals/is/makes six.
56=30读作:Five times six is /are/ makes/make/equal/equals thirty.或Five multiplied by six is /are/ makes/make/equal/equals thirty.
305=6读作:Thirty divided by five equals/is/makes six.或Five into thirty equals/is/makes six.
注意:
在表示加和乘的算式中,谓语动词可用动词的单数形式,也可用复数形式,但减和除中,只能用单数形式。
7.表达倍数
表示倍数时,一倍用once,两倍用twice/double,三倍以上用基数词+ times。
数词表达倍数主要有如下五种方式:
(1)double/twice/three/four times as many/much...as...型
We have produced three times as many computers as we did last year.
我们生产的计算机是去年生产的三倍之多。
(2)double/twice/three/four times the size of...型
用法与size相同的名词常见的有weight(重量),height(高度),depth(深度),width(宽度),age(年龄),length(长度)等。
China is almost twice/double the size of Mexico in area.
在面积上中国是墨西哥的两倍大。
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