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coconutmi 发表于 2013-9-1 17:15 ![]()
这个解释的好好噢,想请问一下, conditional sentence 主从句用相同语态你有从语法书上看到过吗?
...
你说if条件句吗?ManhattanGMAT的SC书上写得很详细:
(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.
The helping verbs would and should should NEVER go in the i f part of the sentence, according to the
GMAT! Be careful, as this construction is common in some regional forms of English. |
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