下面为大家推荐的是9道SAT改错练习题，后面附有详细的答案解析。SAT改错题是对考生基础语法知识的考察，所以难度上相对比较小一些，大家可以通过认真备考取得很好的答题效果。一起里看看详细内容吧。

　　1.The results of the study a (indicate) that the new drug is b (both safer and) more effective than c (was) previously d (assumed). e (No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　2.The board a (reviewing) the courses offered by the college b (found) that the quality of academic programs c (were) generally good but d (somewhat) uneven. e (No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　3.a (One of the) northernmost countries b (of Europe), c (Finland's borders are) Russia on the east, Sweden on the west, d (and) the tip of Norway on the north. e (No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　4.Salt a (is valued) not only because of its properties b (as a condiment) and preservative, c (but) it is d (essential to) the health of humans and animals. e (No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　5.If he a (had begun) b (earlier), he might have succeeded c (in finishing) the d (extremely) complex project before the deadline. e (No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　6.According to a (their) high school basketball coach, b (although) Beth and her sisters worked equally hard in practice, Beth c (tended to) outperform them both d (during) games. e (No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　7.Maude Adams, after her spectacular a (triumph as) the original Peter Pan, b(went about) c (heavy veiled) and was accessible to d (only a handful) of intimate friends. e (No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　8.The Bear Gulch Limestone Formation a (in) Montana is a sequence of bedded limestone layers b (up to) 90 feet thick c (and) approximately 8 miles d (across). e (No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　9.All states a (impose) severe b (penalties on) drivers who do not stop when c (he or she is) d (involved in) accidents. e (No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　Explanation

　　1.The correct answer is E

　　There is no error in this sentence. The plural present tense verb “indicate” agrees with the plural subject “the results.” The phrase “both safer and” appropriately introduces the compound subject complement “both safer and more effective.” And the verb phrase “was…assumed” appropriately indicates an action that occurred in the past: i.e. what scientists thought before the new studies.

　　2.The correct answer is C

　　The error in this sentence is (C): the verb "were" (which is plural) does not agree in number with the noun "quality" (which is singular). The correct sentence reads: The board reviewing the courses offered by the college found that the quality of academic programs was generally good but somewhat uneven.

　　3.The correct answer is C

　　The error in this sentence occurs at (C), where there is improper modification. It does not make sense to say that “Finland’s borders” are “One of the northernmost countries of Europe.” The proper noun “Finland” should be used instead.

　　4.The correct answer is C

　　The error in this sentence occurs at (C), where there is an improper idiom. In order to appropriately complete the correlative construction, the word “also” must be inserted after the conjunction “but.” This results in the correlative construction “not only…but also.” In addition, what follows “not only” must be grammatically parallel to what follows “but also,” so the word “but” should be changed to “but also because.”

　　5.The correct answer is E

　　Each of the parts of the sentence underlined with A, B, C, and D is correct as written. Therefore choice (E): no error is the appropriate answer.

　　6.The correct answer is E

　　Choice (E) is correct. There is no error in the sentence.

　　7.The correct answer is C

　　The error in this sentence is (C): the word "heavy" in the phrase "heavy veiled" should not be in the form of an adjective but in the adverbial form since it is used to modify the participle "veiled." The correct sentence reads: Maude Adams, after her spectacular triumph as the original Peter Pan, went about heavily veiled and was accessible to only a handful of intimate friends.

　　8.The correct answer is E.

　　There is no error in this sentence.

　　9.The correct answer is C

　　The error in this sentence is (C): the pronouns "he or she" (which are both singular) do not agree with the noun "drivers" (which is plural). The correct sentence reads: All states impose severe penalties on drivers who do not stop when they are involved in accidents. Note that the verb "is" has to be changed to "are" when the subject becomes plural.

　　以上就是这9道SAT改错题练习的全部内容，涉及到了很多不同的知识点，都是大家备考中的重点。SAT改错题是语法部分中比较简答的，对考生的要求也不是很难。大家经过一段时间练习，相信会有很大的收获的。