6. 很多考生不會使用由引導詞it引導的句子(如it is said that…)，實際上，這一結構多見於正式文體，不用這一結構而表達同一意義的句子多見於非正式文體：
Informal: The number of students in the classroom has been going down.
Formal: It has been noted with concern that the number of students attending class has been declining alarmingly.
7. 很多考生省略關係代詞、連詞、介詞，這些情況多見於非正式文體。
Informal: He flunked many courses. He had been expelled from the college.
Formal: He flunked so many courses that he had been expelled from the college.
Informal: He dealt with the problem the way his classmates does.
Formal: He dealt with the problem in the way his classmates does.
Informal: We should prevent it going from bad to worse.
Formal: We should prevent it from going from bad to worse.
8. 在表達「請求某人做某事時」，很多考生選擇使用具有非正式文體色彩的主動語態句式，而沒有使用具有正式文體色彩的被動語態句式。
Informal: Please communicate more with your friends and family.
Formal: More communication with your friends and family is needed.
9. 很多考生未能正確使用某些不定代詞、動名詞的複合結構，不太注意句子的主謂一致，未能體現文章的正式文體風格。
Informal: Everybody should look after themselves.
Formal: Everybody should look after himself.
Informal: Everyone should do their best.
Formal: Everyone should do his best.
Informal: I’m not surprised at him failing the course.
Formal: I am not surprised at his failing the course.
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