修辞目的题(rhetorical purpose questions)在新托福阅读考试中为必考题，每篇文章一般有0-2题，今天朗阁老师就为大家论述下新托福阅读中修辞目的题的多变性，其题目表达形式常见为
the author uses x as an example of…
why does the author mention x ?
why does the author use the word … in discussing…?
the author discusses x in paragraph x in order to…
Note the word "net": measuring the actual amounts of groundwater seepage into the lake and out of the lake is a much more complicated matter than merely inferring their difference. (TPO24 lake water)
4.Why does the author use the phrase Note the word "net" in the passage?
A.To emphasize the impact of seepage on water levels
B.To point out that seepage is calculated differently from river flows and atmospheric exchanges
C.To compare the different methods of calculating seepage
D.To emphasize the difficulty of obtaining specific values for seepage inputs and outputs
This facility was then in its third decade of production and was beginning to show signs of decline, perhaps because of over development. (TPO21 Geothermal Energy)
6. In paragraph 3, why does the author mention that in the 1990s the Geysers was in its third decade of production?
A. To provide the historical context of the geothermal production of electricity in the United States
B. To imply that the Geysers was the first geothermal site to be put into production in California
C. To help explain the signs of decline shown by the Geysers
D. To explain why 70 new geothermal sites were put into electricity production in the late 1990s
转折关系：however, but, although, instead, rather than等
因果关系：because, result in, result from, consequently, as a result等
递进关系：furthermore, also, moreover等
态度类词汇：happy, worried, panic, luckily, fortunately, unfortunately, impatient, curious, anxious, ridiculous, hopeless等
请看例子：One necessary condition seems to be a somewhat detached view of human problems. For example, one sign of this condition is the appearance of the comic vision, since comedy requires sufficient detachment to view some deviations from social norms as ridiculous rather than as serious threats to the welfare of the entire group. (TPO1 the origins of theater)
11. Why does the author mention “comedy”?
A. To give an example of early types of theater
B. To explain how theater helps a society respond to threats to its welfare
C. To help explain why detachment is needed for the development of theater
D. To show how theatrical performers become detached from other members of society.
Forehead rubbing by male deer on buck rubs presumably sends a great deal of information to other members of the same species. First, the chemicals deposited on the rub provide information on the individual identity of an animal; no two mammals produce the same scent. For instance, as we all know, dogs recognize each other via smell. (TPO28 Buck Rubs and Buck Scrapes)
5. Why does author mention that “dogs recognize each other via smell”?
A.To point out the similarities between dogs and deer
B.To argue that animals communicate through scent rather than through vision
C.To support the claim that the scent of a buck rub serves to identify its maker to other deer
D.To suggest that rubs can be detected by other species
这句话是由for instance引出的，那么如果要找这个例子的目的，要到前面去找论点。这一段的总论点，就是句话，主要是“send information to other members”; first后面是个分论点，所以答案应该跟这两句有关，因此选C气味可以帮助identify。
At greater depths within Earth, the pressure of the overlying rock causes pores and cracks to close, reducing the space that pore water can occupy, and almost complete closure occurs at a depth of about 10 kilometers. The greatest water storage, therefore, lies near the surface. (TPO28 Groundwater)
1. In paragraph1, why does the author mention “the pressure of the overlying rock”?
A.To show how water can be forced deep under Earth’s surface
B.To show why groundwater is more plentiful than surface freshwater
C.To correct a commonly made error about the location of groundwater
D.To explain why most groundwater lies near Earth’s surface
在修辞的描写之后，本段的较后一句出现了therefore。这里也是在说the pressure of the overlying rock导致的结果，也就是文章拉到它的目的。其结果是，大部分的水储都在比较表面的地方。所以其目的就是要解释为什么水都在表面的地方，因此选D。
An even more exciting find was reported in 1994, also from Pakistan. The now extinct whale Ambulocetus natans ("the walking whale that swam") lived in the Tethys Sea 49 million years ago. It lived around 3 million years after Pakicetus but 9 million before Basilosaurus. The fossil luckily includes a good portion of the hind legs.(TPO2 The origins of Cetaceans)
9. Why does the author use the word luckily in mentioning that the Ambulocetus natans fossil included hind legs?
A. Fossil legs of early whales are a rare find.
B. The legs provided important information about the evolution of cetaceans.
C. The discovery allowed scientists to reconstruct a complete skeleton of the whale.
D. Until that tim