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题库 / Prep2008E1-SC-202
Providing initial evidence that airports are a larger source of pollution than they were once believed to be, environmentalists in Chicago report that the total amount of pollutant emitted annually by vehicles at O'Hare International Airport is twice as much as that which is being emitted annually by all motor vehicles in the Chicago metropolitan area.
as much as that which is being emitted annually by all
as much annually as is emitted by the
as much compared to what is annually emitted by all
that emitted annually by all
that emitted annually compared to the
题目分析：
略。
选项分析：
A选项：is being emitted时态有误。本题的比较对象是“在机场的车辆释放的污染物量”和“市区所有机动车释放的污染物量”，因此，不能说是“在机场的车辆释放的污染物量”和“市区所有机动车正在释放的污染物量”（这样后者肯定少了，因为只是某一时刻的量）。
B选项：副词annually应修饰动词emit，即，每年地释放，而不能修饰much。
C选项：语法有误，as much as是正确的搭配，不能用as much compared to。
D选项：Correct. 本选项在语法和逻辑上均是正确的。twice后面可以直接接名词，也可以加as much as。
E选项：过去分词短语compared to应改为介词by。这是因为，后一个比较对象应是“市区所有机动车释放的污染物量”，即，motor vehicles in the Chicago metropolitan area是emit的逻辑发出者。被动语态规定，be done by A中的A才是do的逻辑主语。
I. ①数量的直接比较：amount X is twice as much as amount Y --> inferior, and possibly even wrong (redundant)；amount X is twice amount Y --> undoubtedly better
②表示程度等 The new house is twice [=two times] as large as our old one.
③名词在数量上的笔记（比较对象是名词不是amount）e.g.They employ 90 people, twice as many as last year.
II. AB的平行问题：B：the real problem is that "is" has no parallel in the first part of the comparison - i.e., the first part doesn't say "is emitted" or "are emitted" - and so the comparison is wrong.|A中的is being同理。
非数字物体通常用double(twice) as much as或double(twice) as many as,当数字进行比较时直接用twice或double
mark-比较题
twice后面可以直接接名词，也可以加as much as。
比较前后状态一致
twice后面可以直接接名词，也可以加as much as。
A选项：is being emitted时态有误。本题的比较对象是“在机场的车辆释放的污染物量”和“市区所有机动车释放的污染物量”，因此，不能说是“在机场的车辆释放的污染物量”和“市区所有机动车正在释放的污染物量”（这样后者肯定少了，因为只是某一时刻的量）。
B选项：副词annually应修饰动词emit，即，每年地释放，而不能修饰much。
当“非数字物体（即，这个名词本身没有纯粹的数字概念，例如dogs、cats等绝大多数名词）”比较时，我们通常会用double(twice) as much as或double(twice) as many as，例如：
twice as many dogs
double as much water
但是，当“数字”比较时，我们不能加as many或as much，例如：
twice the increase
double the decrease
gmat.la/questio…p2008E1-SC-181
当“非数字物体（即，这个名词本身没有纯粹的数字概念，例如dogs、cats等绝大多数名词）”比较时，我们通常会用double(twice) as much as或double(twice) as many as，例如：
twice as many dogs
double as much water
但是，当“数字”比较时，我们不能加as many或as much，例如：
twice the increase
double the decrease
https://bichu.com.cn/question/Prep2008E1-SC-181
错选A，看到as much as就想用！！完全忽略了D，E选项，这里that which怪怪的
twice as many...as; twice as much...as; twice + the + n.; twice + what从句
that指的是amount of pollutant
A. which is being emitted annually和前面的amount of pollutant emitted annually时态不平行
Ron的解释
A选项中的being： "being" doesn't make sense because it's not parallel to anything in the earlier part of the construction.
B：the real problem is that "is" has no parallel in the first part of the comparison - i.e., the first part doesn't say "is emitted" or "are emitted" - and so the comparison is wrong.
the total amount of pollutant emitted annually by vehicles at the O'hare International airport
is twice
that emitted annually by all...
twice后面可以直接接名词，也可以加as much as。
twice后面可以直接接名词
错选B annually修饰emit，选项中错误修饰了much
D选项：✅twice后面可以直接跟名词that（the total amount of pollutant）
E选项：前后比较不对称
⚠️twice后面可以直接跟名词，也可以跟as much as
nnually应修饰动词emit，即，每年地释放，而不能修饰much
twice后面可以直接接名词，也可以加as much as。
(3) If the noun in question is already an explicitly numerical quantity, then you should use neither "much" nor "many". Instead, you should just use "twice" or "double" by itself. e.g., twice the increase --> "increase" is an explicitly numerical quantity