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In 1981 children in the United States spent an average of slightly less than two and a half hours a week doing household chores; by 1997 they had spent nearly six hours a week.


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当前版本由 01**** 更新于2015-12-20 14:23:17 感谢由 01**** 对此题目的解答所做出的贡献。

是语法指代的问题.不能出现歧义.分号前后都是一个独立的句子.当然句子之间也是有一定的联系的
A,they 指代有问题, 如果指代children的话会令句子出现逻辑错误: 1997年还是1981年那帮孩子

B.x09前面有且仅有一个figure,且明确定义了,所以用"that figure"意思就是如前所述定义的figure.

C 无逻辑或语法上的错误, 但相比选项B, 被动表达不如主动, 并改变句子重心

D compared with没有与a figure对应的逻辑主语

E growing无法表达出完成的状态

当前版本由 lee_drink 更新于2016-02-15 12:45:15 感谢由 lee_drink 对此题目的解答所做出的贡献。

C whereas nearly six hours a week were spent in 1997是一个完整的句子,因此前面不应该用逗号,而应该用分号

当前版本由 cm**** 更新于2016-10-21 19:12:25 感谢由 cm**** 对此题目的解答所做出的贡献。

whereas引导的是个从句 所以用逗号是正确的 反对楼上的解析

当前版本由 OoO 更新于2016-11-04 17:48:46 感谢由 OoO 对此题目的解答所做出的贡献。

A中的they没有指代对象,不能指代1981年的children。

根据逻辑语义 1981学生的做家务时间 到1997年已经增加到了6小时。 实际上是 不同时期做家务的时间在比较。by 1997后面要用完成时态

B正确

C。无逻辑或者语法上的错误!!!但是被动降级,主动优于被动没有B好


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题目讨论 (如果对题目有任何的疑惑,欢迎在这里提出来,大家会帮你解答的哦~)
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    Horacejin:

    c有主语,但无逻辑主语,比b有歧义
    19楼  | 2019-04-08 12:14:27 回复
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    276901052:

    1.they是完整指代 即1997的children和1981的children是同一伙人 排除A
    2.compared with无逻辑主语 排除D
    3.growing无法表达出完成的状态 排除E
    由于主动优越于被动所以选择B

    20楼  | 2019-04-08 02:35:58 回复
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    佛系求gmat上700:

    Forget the grammar option A isn't logical. If you say "In 1981", you can use average figure, but if you say "By 1997", you have to use the absolute total figure. For e.g.
    In 2010 my wife spent an average of $1000 a month on beauty products; by 2012 she had spent $2000 a month.
    This is completely illogical, if she was spending 1K a month in 2010 and by 2012 she was spending 2K a month, when did she started mooching off the extra $1K . Clearly if we use the "By 2012" construction we need the total amount she had spend. For e.g.
    In 2010 my wife spent an average of $1000 a month on beauty products; by 2012 she had spent $24000 of my hard earned cash.
    
    If we want to specify the increase in spending then we must use the construct
    In 2010 my wife spent an average of $1000 a month on beauty products; by 2012 that figure had grown to $2000 a month.
    
    So lets get to the options one by one
    
    A) Wrong due to above reason
    C) Use of "whereas" suggests a contrast, now to contrast properly we require that the two parts of the comparison have the same construct. 1st part is in active voice (had spent), but the 2nd part is in passive voice (were spent).
    D) What are the 2 things compared here, it appears that "household chores" are compared with "a figure" which is incorrect
    E) The use of Growing suggests an ongoing event, but actually the sentence is referring to a past date. So a Past tense is required here.
    
    B) In 1981 XYZ spent on average X hours a week doing something; by 1997 that figure had grown to Y hours a week. - Sounds logical, only concern you might have would be with the Past Perfect tense "had grown". Now Past Perfect is used when there are 2 events that happened in the past and we wish to specify the sequence of those 2 events. The earlier event uses a Past Perfect tense. Here the 2 events are 
    1) Growth in the figure 
    2) Start of year 1997
    The growth happened before 1997 (by 1997), so the use of Past Perfect is justified here.
    
    by 1997 that figure had grown to Y hours per week. So B is the correct answer.
    18楼  | 2019-03-30 13:23:54 回复
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    汪二喵:

    A they从语义上指的同一批人
    C 在comparison中最好主被动一致
    D找不到compared的修饰对象
    E一看就觉尬
    17楼  | 2018-12-14 13:02:18 回复
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    AUCHUI:

    A能不能这样理解1981用的是过去式,那1997过去完成肯定是个错的?毕竟1997更晚一些
    16楼  | 2018-10-23 19:38:48 回复
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      anthony2333: 你有看到正确答案也用了过去完成么

      2019-01-17 11:33:23 回复

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    阿萌:

    Ron:choice a: the tense (past perfect) is weird; it implies that they had put in 6 hours of work (total) by 1997. alternatively, it implies that they had put in 6 hrslwk at some point prior to 1997, but that they hadn't maintained that level of output.
    
    choice b is ok:
    - past perfect makes sense, because the figure had finished growing by then. (note that the past perfect makes sense here, even though there isn't an explicit 'second event': in the present, we'd say the figure has grown to such-and-such a level, so, by 1997 [a past date], we'd say it had grown to such-and-such a level.
    - the sentence uses the construction 'that figure', thus avoiding any weird pronoun/modifier references.
    
    choice c: needless use of the passive voice. at best this is awkward, and at worst it makes the reader think that the 6 hours of chores were being performed by someone else (i.e., not children).
    
    choice d: illogical - the chores themselves are 'compared with a figure of...' which doesn't make sense.
    
    choice e: just plain bad grammar in the construction of the modifier, plus unacceptable change in meaning (this sentence, unlike the original, declares that the growth up to 6hrs/wk occurred in 1997)
    15楼  | 2018-09-24 20:48:28 回复
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    考到770不是梦:

    a they 指代没有问题!指代不是1981 的children!是children of the us(from ron)
    a 真正的问题是 by 1997 和had spent. ron 解释说如果用past perfect,有两种情况。第一种是i had a pain for five days until i saw the doctor(截止到第二件事之前第一件事的发生。第二种是i had done sth 导致了sth,前者导致了过去发生的后者的一些变化。如果没有着两种关系 had been没有意义。在这里a 中:“Since "spend nearly six hours a week", like ""perform well", doesn't represent a fundamental change of state or indicate accomplishment of a job or task along the timeframe, thus the combination of "had spent nearly six hours a week" and "by 1997" makes no sense here.
    
    However, by contrast, Choice B below, with "figure grow to nearly six hours a week" indicating a fundamental change, makes sense here in the timeframe of "by 1997".”
    14楼  | 2018-09-01 15:29:44 回复
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    29522185:

    为什么用过去完成时?
    13楼  | 2018-08-27 20:42:16 回复
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    发呆的夜之亡魂:

    唉。。。。总觉得C是最合适的
    12楼  | 2018-08-14 21:03:54 回复
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      发呆的夜之亡魂: 但是现在看来C也不对,原文强调了by 1997就是说到1997之前一个时间段,但是C的in 1997仅仅指的是1997年间上升到6个小时,会造成细微的理解差异,就是C会认为1997年之前都是和1981年一样的时间长度,但是到1997年突然上升。正确选项说的是从1981年以来慢慢上升,到1997年之前就有6个小时了。

      2018-08-14 21:25:22 回复

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      jamesyayy: 关键问题不在于你说的这个,在于主动语态和被动语态的区别,whereas表示转折和对比,可以从句whereas的内容只是说了 有六个小时被用来做家务了,但是不知道是谁做的,就可以理解为谁做的都可以,那肯定就不可以和前面的 1981年美国儿童做家务的数据形成对比了,你怎么知道后面那句说的是不是儿童的情况啊

      2018-08-20 09:04:13 回复

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  • 用户头像

    糖糖要加油:

    做一次错一次。。。
    11楼  | 2018-01-20 14:26:22 回复
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