2015年9月12日SAT官方每日一题--改进句子！在SAT考试中改进句子部分内容是常考的，所以需要考生们在平时的备考中多做练习才行，下面是有关SAT官方每日一题关于改进句子的内容，赶快来做题吧。

　　Part or all of the following sentence is underlined; beneath the sentence are five ways of phrasing the underlined material. Select the option that produces the best sentence. If you think the original phrasing produces a better sentence than any of the alternatives, select choice A.

　　Before she became a major rock star capable of filling stadiums, she sings in little-known clubs and as a back-up singer for other acts.

　　(A) sings

　　(B) has sung

　　(C) is singing

　　(D) had sung

　　(E) has been singing

　　Explanation

　　Choice (D) is correct. It avoids the verb tense error of the original by providing the past perfect tense verb phrase “had sung” to indicate an action that was completed before another action (e.g., “became a major rock star”) in the past.

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　　（编辑：马菲）