GMAT句子改错--Would And Could

在GMAT句子改错中，Would和could常见的有两种用法，下面由的王杰老师为大家详细的解答一下。

Usage #1 作为“will”和“can”的过去式。

“Would” is the past tense of “will”, and “could” is the past tense of “can”
this only works of the appropriate part of the sentence is in the past.

例如：According to his most recent advertisement. Mookie the Bookie can predict with 100% accuracy which teams will win next week’s games.
In October 2, 1982, advertisement declared that Mookie the Bookie could predict with 100% accuracy which teams would win next week’s games.

Usage #2 用于非事实的假设性的情况，既虚拟语气。

“Would” and “could” are used to describe hypothetical situations that are not true.
例如：
If I had one million dollars. I could buy 800000 hamburgers at the gas station.
If I had one million dollars. I would donate 800000 hamburgers to country food bank.
If you want more information HYPOTHETICAL SUBJUNCTIVE
If I WERE a millionaire, I would donate ….

我们来看两个GMAT句子改错的例题：  【】

例题1：In a blow to those who still harbored the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient had added as the message is forwarded to others or sent back and forth.

A.who still harbored the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient had added
B.who had still been harboring the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick for enabling an interloper to rig an E-mail message so that this person was privy to any comments that a recipient might have added
C.who still were harboring the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick enabling an interloper to rig an E-mail message so that this person is privy to any comments that a recipient would add
D.still harboring the illusion that E-mail exchanges are private, a watchdog group recently uncovered a trick that enables an interloper to rig an E-mail message so that this person will be privy to any comments that a recipient might add
E.still harboring the illusion that E-mail exchanges had been private, a watchdog group recently uncovered a trick that will enable an interloper to rig an E-mail message so that this person was privy to any comments that a recipient might add
正确答案：D

例题2：The first detailed study of magpie attacks in Australia indicates that by the time they had reached adulthood, 98 percent of men and 75 percent of women born in the country have been attacked by the birds.

A. by the time they had reached adulthood, 98 percent of men and 75 percent of women born in the country have been attacked by the birds
B. by the time they reach adulthood, 98 percent of men and 75 percent of women, who were born in the country, had been attacked by the birds
C. by the time they reached adulthood, 98 percent of men and 75 percent of women born in the country had been attacked by the birds
D. 98 percent of men and 75 percent of women that were born in the country were attacked by the birds by the time they reach adulthood       
E. 98 percent of men and 75 percent of women who were born in the country, by the time they reached adulthood had been attacked by the birds
正确答案：C

补充一个常见的迷惑点，很多学生分不清especially和specially。

especially & specially

*“especially” means “to a greater extent than others”
   This chemical is ESPECIALLY dangerous because it can methylate molecules in your body.
*“specially” means “in a special way”
   The food had to be specially prepared for the guests with unusual allergies.

例题：
Sulfur dioxide, a major contributor to acid rain, is an especially serious pollutant because it diminishes the respiratory system's ability to deal with all other pollutants.
A. an especially serious pollutant because it diminishes the respiratory system's ability to deal
B. an especially serious pollutant because of diminishing the respiratory system's capability of dealing
C. an especially serious pollutant because it diminishes the capability of the respiratory system in dealing 
D. a specially serious pollutant because it diminishes the capability of the respiratory system to deal
E. a specially serious pollutant because of diminishing the respiratory system's ability to deal

正确答案：A

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