A study commissioned by the Department of Agriculture showed that if calves exercise and associated with other calves,they will require less medication and gain weight quicker than do those raised in confinement.
(A) associated with other calves,they will require less medication and gain weight quicker than
(B) associated with other calves,they require less medication and gain weight quicker than
(C) associate with other calves,they required less medication and will gain weight quicker than do
(D) associate with other calves,they have required less medication and will gain weight more quickly than do
(E) associate with other calves,they require less medication and gain weight more quickly than
希望下面的citation能对你有用
Source from: Manhattan SC 5th Chapter7 Verb tesne&mood
(1) General Rule with no uncertainty IF Sophie EATS pizza, THEN she BECOMES ill. (IF Present, THEN Present.) This pattern is equivalent to whenever: WHENEVER Sophie EATS pizza, she BECOMES ill,
(2) General Rule with some uncertainty IF Sophie EATS pizza, THEN she MAY BECOME ill. (IF Present, THEN Can or May.) Here, the helping verbs can or may can be used to allow for a somewhat uncertain outcome.
(3) Particular Case (in the future) with no uncertainty IF Sophie EATS pizza tomorrow, THEN she WILL BECOME ill. (IF Present, THEN Future.) Another possibility for the Particular Case (in the present) is Present Perfect: I f Sophie HAS EATEN pizza, then she WILL BECOME ill.
(4) Unlikely Case (in the future) IF Sophie ATE pizza tomorrow, THEN she WOULD BECOME ill. (IF Hypothetical Subjunctive, THEN Conditional.) Here, the writer thinks that Sophie is unlikely to eat pizza tomorrow. The Conditional Tense (would) shows the hypothetical result of an unlikely or untrue condition. In place of would, the form could can be used to indicate improbability as well.
(5) Case That Never Happened (in the past) IF Sophie HAD EATEN pizza yesterday, THEN she WOULD HAVE BECOME ill. IF Past Perfect, THEN Conditional Perfect. Other patterns are possible, but if... then sentences that you encounter on the GMAT should conform to one of these five patterns.
这题讲的是一个general rule，也就是上述提到的第（1）种情况
以上
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发表于 2015-6-19 20:28:09
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