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题库 / Prep2007E2-SC-91
The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force a rethinking of the role of comets in the delivery of organic compounds to the evolving Earth.
The spectacular disintegration of a comet last year in full view of ground- and space-based telescopes provided new insights into how comets form and may thus force
The spectacular disintegration of a comet last year in full view of ground- as well as space-based telescopes, provided new insights into how comets form and thus possibly forcing
When a comet's spectacular disintegration occurred in full view of ground- and space-based telescopes last year, it provided new insights into how comets form and thus may possibly force
Last year, in full view of ground- and space-based telescopes, a comet's spectacular disintegration provided new insights into how comets form and thus possibly forcing
Last year, in full view of ground- as well as space-based telescopes, the spectacular disintegration of a comet has provided new insights into how comets form and may thus force
as well as使用不当，排除B、E
C，may possible语义重复
D，forcing没有平行对象
A correct
PAST TENSE vs. PRESENT PERFECT TENSE
--
The PAST tense is used for:
* HISTORICAL ACTIONS
Ex: Mexico achieved independence in 1810.
* POINT ACTIONS that do not have a direct bearing on the current situation
Ex: Thomas, who is the president of First National Bank, won two Olympic medals in track
and field.
* ENDURING ACTIONS/STATES that are FINISHED
Andrea was the president of First National Bank from 1990 to 1994.
--
The PRESENT PERFECT is used for:
* POINT ACTIONS that DO have a direct bearing on the current situation
EX: Thomas, who is the fastest sprinter in his country’s history, has won two Olympic medals
in track and field.
* ENDURING ACTIONS/STATES that are STILL ONGOING
Carlos has been the president of First National Bank since 2001.
Note that, in some cases, the same point action could be described either by the past tense or by the present perfect tense!
(See the two examples with "Thomas" above.)
When a sentence opens with "In xxxx", followed by a comma, that modifier describes the entire action of the sentence.
In my house, children wear respectable clothes.
--> This is a general statement about the dress code at my house: If children are there, they dress respectably.
It's not a statement about any child(ren) that are actually at my house right now.
If "in xxxx" follows a noun, without a comma, then it describes the noun.
The children in my house wear respectable clothes.
--> There are children in my house right now; this sentence describes their sartorial habits. (This sentence implies nothing about what generally happens in my house.)
Answer choice A puts the events in proper perspective:
* The comet disintegrated last year; this was a one-time event.
* It provided new insights. Since it was a one-time event, it's appropriate to say 'provided' (simple past tense), unless the same event has CONTINUOUSLY provided newer and newer insights, in which case 'has provided new insights' would be better. But there's no indication of the latter in this sentence.
* The 'forcing' is a possible future event.
According to choice E:
* The comet's disintegration produced new insights last year.
And, more absurdly,
* The disintegration produced those insights in full view of ground- and space-based telescopes!
C中may和possibly重复！而且前后也并没有一个when的意思，不能说当分解发生的时候才提供新见解，没分裂的时候就没有这个见解了。
时态，ae，永远的硬错误
对比选项发现错误
m
e错误
现在完成时态不可以用在过去时语境中
BD，forcing前面没有和它平行的排除，
C ，may + possibly很明显的语义重复
E， as well as错了，ground-based和space-based是同级的概念，要用and；时间点事last year，时态用has done不对！
E选项，as well as错误，完成时态错误。
D选项中，in full view of ground- and space-based telescopes作为状语，侧重强调的是一种状态，而事实上应该是事件/动作本身provide new insight, 而且后面forcing不对，因此不选。不知道这样理解是否正确。