Lacking information about energy use, people tend to overestimate the amount of energy used by equipment, such as lights, that are visible and must be turned on and off and underestimate that used by unobtrusive equipment,such as water heaters.
8. Lacking information about energy use, people tend to overestimate the amount of energy used by equipment. such as lights, that are visible and must be turned on and off and underestimate that used by unobtrusive equipment, such as water heaters. (A) equipment, such as lights, that are visible and must be turned on and off and underestimate that (B) equipment, such as lights, that are visible and must be turned on and off and underestimate it when (C) equipment, such as lights, that is visible and must be turned on and off and underestimate it when (D) visible equipment, such as lights, that must be turned on and off and underestimate that (E) visible equipment, such as lights, that must be turned on and off and underestimate it when D、E选项中，underrestimate that 和 underestimate it when 有什么区别？ 是不是因为that表示泛指，即that指代the amount of energy; it指代包括修饰词在内的前面的整体,即the amount of energy used by equipment？造成逻辑错误？ 等待大牛解惑啊！
这题可以用曼哈顿5语法里的两点来解释：1、GMAT中,永远不会用This/that/these/those来直接指代名词,除非后面加上修饰性名词、短语（of…）或从句。本题中that后有修饰性短语，所以可以使用；2、4. It/they指代的是与先行词同样的个东西，That/those指代的是与先行词不同的那个东西。本题中前后的the mount ofenergy是不一样的。
【提问】在句子中... ...equipment. such as lights, that are visible ... ...
1）that 引导的定语从句和先行词equipment之间 可以存在 “逗号”吗？
2）我记得如果 使用关系代词which 修饰先行词的话，应该是“有逗号有which，没有逗号没有which”，而且which应该是就近修饰先行词，比如这里 我觉得应该是修饰lights (不知道我的理解对吗？)，如果 such as lights是插入语的话，关系代词是不是 直接修饰such前面的 名词呢？
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发表于 2012-10-18 20:21:24
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