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关于过去时和过去完成时。用一道老题 (结合了时态,resulting from和because of 用法等)经典老题来总结一下。
2001 proved to be the automaker's first losing year since 1992, when the company had lost $7.4 billion, which was primarily because of almost $7 billion in accounting charges.
a)when the company had lost $7.4 billion, which was primarily because of
b)when the company had lost $7.4 billion, primarily resulting from
c)when the company lost $ 7.4 billion, primarily because of
d)which is when the company7 lost $7.4 billion, and that was primarily because of
e)which is when the company lost $7.4 billion, primarily resulting from
选项AB都用了过去完成时态。是错的。我把RON对这个时态的解说贴过来:
if we're going to say "had lost", we need to name another subsequent event/circumstance that either (a) ended that trend or (b) was affected by that trend.
the key is that you don't use past perfect unless you have 2 past time markers, the earlier of which has a distinct impact on, or relevance to, the later.
for instance:
i had already left home when my friend arrived at my door.
--> past perfect for the first verb, because it has a bearing on the circumstances of the second one (i.e., my friend came over to find an empty apartment)
i went to the restaurant after i left home --> just use the simple past 'left' (not 'had left'), because this time my leaving home has no direct bearing on the circumstances under which i went to the restaurant.
if you're a native speaker of english, verb tense is one of the few areas in which your ear will be a reliable predictor. verb tense is, after all, saturated with meaning, and it's one of those things that we native speakers use almost flawlessly even as relatively small children.
if you're not a native speaker, then, not so much.
also, this is definitely not carte blanche to use your ear in general. on most sentence correction issues - pronouns, modifiers, spread-out subject-verb agreement, and the like - your ear will be an absolutely horrible guide. |
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