下面是2013年8月4日的SAT官方每日一題的內容，是關于寫作方面的，題型是句子改錯。SAT官方每日一題是collegeboard每天都會發布的題目，關于SAT考試的三個部分的各個題型。下面我們就一起來看一下這個SAT官方每日一題吧。

SAT官方每日一題之寫作---句子改錯：

Writing > Identifying Sentence Errors

The following sentence contains either a single error or no error at all. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct. If the sentence contains no error, select choice E.

The new law requires that all bicycle riders A(have been wearing) helmets B(while) on C(their bicycles), D(even when) they are not moving. E(No error)

(A) A

(B) B

(C) C

(D) D

(E) E

The correct answer is A

Explanation

The error in this sentence occurs at (A), where there is an improper verb form. The use of “requires that” dictates that the subjunctive form of “to wear” is needed. The phrase “have been wearing” should simply be “wear.”

下面是一道和SAT官方每日一題相似的題目，供大家練習：

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

The correct answer is E

Explanation

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.

以上就是關于2013年8月4日SAT官方每日一題中寫作句子改錯部分的詳細內容，包括了題目和選項以及答案，后面附有一道相關的練習題。大家可以在備考SAT的過程中關注SAT每日一題的內容，這樣就可以更好有不間斷的練習，也就能在日積月累的過程中得到提高。