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同意 LS 有几个很好的例子解释了 base on 的用法 大全 159. Based on accounts of various ancient writers, scholars have painted a sketchy picture of the activities of an all-female cult that, perhaps as early as the sixth century B.C., worshipped a goddess known in Latin as Bona Dea, “the good goddess.” (A) Based on accounts of various ancient writers (B) Basing it on various ancient writers’ accounts (C) With accounts of various ancient writers used for a basis (D) By the accounts of various ancient writers they used（E） (E) Using accounts of various ancient writers 159, og-011 In choice A, the introductory clause beginning Based on modifies scholars, the noun that immediately follows it: in other words, A says that scholars were based on the accounts of various ancient writers. Choice B is awkward and imprecise in that the referent for the pronoun it is not immediately clear. C and D are also wordy and awkward, and in D By the accounts... they used is an unidiomatic and roundabout way of saying that scholars used the accounts. E, the best choice, is clear and concise; it correctly uses a present participle (or “-ing” verb) to introduce the modifier describing how the scholars worked. 160. Based on pinto beans and corn tortillas, the Pima Indians have a diet that derives 70 percent of its protein from vegetable sources and only 30 percent from animal foods, the reverse of the typical North American diet. (A) Pima Indians have a diet that derives (B) Pima Indians in their diet derive (C) diet of the Pima Indians derives (D) diets of the Pima Indians have derived（C） (E) diet of the Pima Indians, deriving 160, 补充-125 A) Based on，the Pima Indians错
B) 同上
C) correct. the diet of the Pima Indians对应the typical North American diet
D) the diets of the Pima Indians与the typical North American diet不对应
E) 没谓语动词 161. Based on the growth rates of large modern reptiles such as the Galapagos tortoise and examinations of fossils of juvenile dinosaurs, scientists estimate that the largest dinosaurs probably lived to be between 100 and 200 years old. (A) Based on the growth rates of large modern reptiles such as (B) On the basis of growth rates of large modern reptiles such as (C) Based on the growth rates of large modern reptiles like (D) On the basis of growth rates of large modern reptiles, like those of（B） (E) Based on such growth rates as those of large modern reptiles like 161, 补充-187 A) Based on，scientists逻辑关系错。
B) best
C) Based on，scientists逻辑关系错。
D) 意思表达没有用such as来的清楚，直接明了。这里举例such as比比较like好. those指代不清，large modern reptiles of the Galapagos tortoise产生歧义。
E) Based on，scientists逻辑关系错。 | 
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发表于 2009-3-25 22:49:00
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