gre数学备考常用表达公式 1.is equal to; is the same as = the result is; yields; gives 2.the sum of x and y; the total of x and y; x added to y; x increased by y; x+y x more then y; x greater than y 3.x minus y; x less y; the difference of x and y; x take away y; from x subtract y' x decreased by y; x-y x diminished by y; y is subtracted from x; y less than x (note the reversal) 4. x multiplied by y; the product of x and y; xy 5. divided by y; the quotient of x and y; x y, y divided into x (note the reversal) 6. A and B are factors of C; A and B are divisors of C; C is divisible by A and by B; A B=C C is a multiple of A and of B; A divides C and B divides C; 7. the ratio of a to b a:b, 8. reciprocal of x 9. x times as many z as y; z=x y 10. a squared; a to the second power a2 11. a cubed; a3 a to the third power 12. between a and b (a,b) between a and b, inclusive [a,b] 13. off 低于,从……中扣除 14. account for 占 15. third 16. of x (a fraction of x); x,0.75x 75% of x (a percent of x)
gre数学备考常用表达公式的延伸阅读——GRE数学部分答题技巧 (1)、GRE考试之大小比较题 (Quantitative Comparison) a)解答之前,两个Column都要先认真看一看; b)注意出题的目的在于强调速度和捷径,因此不要陷于冗长的演算过程; c)尽可能地简化问题,必要时画出草图或做上记号; d)当问题中没有出现变量而都是数值时,不可以选(D); e)当问题中出现变量x、y、z或a、b、c时,可以由0、1和-1的简单数值代替计算;如果代入不同的数值,有不同的大小关系则就选(D); f)要特别注意数学比较大小的最后几题。 (2)、GRE考试之计量能力题 (Math Ability) a)仔细阅读题目,把要求解的地方圈起来; b)画出草图或在图上做记号; c)若有简单的公式或解法,则尽量用简单的方法直接求解,再选择正确的答案; d)若没有公式可循,则试着消去不合理的答案,即由答案做起,代入题目中验证是否正确,病且用近似值求法来简化计算过程,最终求出正确答案; e)要特别注意最后的几题,一般设有复杂而巧妙的陷阱。 (3)、GRE考试之图表分析题(Graphic Analysis) a)先略读一下题目; b)检视一下图表,注意标题、图例及比较显着的变化; c)把每个题目的重点圈起来; d)太难的或容易混淆的题目要跳过去; e)如果计算的项目很繁杂,应先从可能的答案求近似值,排除不合理的答案; f)在整个数学部分的试题中,图表分析的题目应该放在最后面做。 最后注意,我们建议考生在应试数学部分的试题时一定要细心认真,考试时要有充裕时间,且已经做完一遍,最好要重新一遍。再次的验算通常可以改正四道题左右。对于我国考生来说,只有在数学部分获得高分,才能弥补部分的缺陷。 |
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