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SAT改进句子题目是对考生的语法掌握情况和逻辑思维能力的综合考察，下面我们为大家整理了几道语法改进句子练习题，后面附有答案解析，大家可以参考下：

 1. A major abstract expressionist painter, Willem de Kooning is best known for having controversial paintings of women.

　　(A) for having

　　(B) for the

　　(C) for his

　　(D) because he had

　　(E) because he made

2. According to the study, personality traits may vary as much from one dog to another as from one person to another.

　　(A) as

　　(B) as it is

　　(C) as when they are

　　(D) than

　　(E) than they do

3. Though its early history is not fully known, origami, the art of folding objects out of paper without cutting, pasting, or decorating, seems that it had developed from the older art of folding cloth.

　　(A) seems that it had developed from

　　(B) seems to have developed from

　　(C) seems to have been developed out of

　　(D) had developed, it would seem, out of

　　(E) developing, it seems, out of

4. There are many famous quotations previously credited to “Anonymous,” researchers have discovered that they were in fact written by female authors.

　　(A) There are many famous quotations previously credited to “Anonymous,” researchers have discovered that they were in fact written by female authors.

　　(B) Many famous quotations that were in fact written by female authors were previously credited to “Anonymous” and researchers discovered this.

　　(C) Researchers have discovered many famous quotations that were previously credited to “Anonymous,” they were in fact written by female authors.

　　(D) Researchers have discovered that many famous quotations previously credited to “Anonymous” were in fact written by female authors.

　　(E) The discovery of many famous quotations previously credited to “Anonymous” but in fact written by female authors were made by researchers.

EXPLANATION:

1.The correct answer is C

Choice (C) is correct. It avoids the error of the original by using the pronoun “his” to indicate that the “controversial paintings” discussed in the sentence were produced by de Kooning.

2.The correct answer is A

Choice (A) is correct. It avoids the errors of the other options by using the idiomatic “as” to complete the phrase “as much … as.”

3.The correct answer is B

Choice (B) is correct. It avoids the error of the original by linking the subject of the sentence, “origami,” with an appropriate verb form, “seems to have developed.”

4.The correct answer is D

Choice (D) is correct. It avoids the comma splice error of the original by combining the two independent clauses that were improperly joined by only a comma (“There are many famous quotations previously credited to ‘Anonymous’” and “researchers have discovered that they were in fact written by female authors”) into one sentence consisting of a main clause (“Researchers have discovered”) and a dependent clause (“that many famous quotations previously credited to ‘Anonymous’ were in fact written by female authors”).

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