标题: OG 129 [打印本页] 作者: shje 时间: 2004-12-1 12:02 标题: OG 129
129. In an effort to reduce their inventories, Italian vint­ners have cut prices; their wines have been priced to sell. and they are.
have been priced to sell, and they are
are priced to sell, and they have
are priced to sell, and they do
are being priced to sell, and have
had been priced to sell, and they have
In choice C, the best answer, do is correctly used in place of the full verb do sell; in this verb, do is a conjugated form and sell is in the infinitive form, corresponding to its previous use in the sentence (in the phrase priced to sell). In choice A, the omitted word is selling; in B, D, and E, it is sold. Neither of these forms corresponds properly to to sell earlier in the sentence. Also, in E, the past perfect had been priced signifies that the wines had been priced to sell before the prices were cut.
这题，我一直没清楚。究竟，省略上有什么原则吗？
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