The staff meeting has been postponed until next Thursday; therefore, I will be unable to get approval for my project until then.
正确：In this incredible canvas, the artist used only monochromatic elements.
正确：The no-holds-barred argument continued into the night.
毛病：It is difficult to distinguish between the scent of roses and that of tulips.
正确：T o distinguish between the scent of roses and that of tulips is difficult.
After if than whenever although in order that though where as provided that unless whether because since until while before so that
毛病：Global warming. This is what the scientists and journalists are worried about.
正确：Global warming is the cause of concern for scientists and journalists.
留意，而且凡是情况下有as follows、the following、namely或like等提醒短语。，前缀或后缀和主体之间应有连字标记。留意要连结利用标准用法，一个自力的句子就酿成几个自力的从句。例如：
毛病：I want: a slice of pizza and a small green salad.
正确：This is what I want: A slice of pizza and a small green salad.
Susan’s old car has been belching blue smoke from the tailpipe for two weeks, but it has not broken down yet.
Whooping cranes are an endangered species; they are unlikely to survive if we continue to pollute.
正确：Most people would agree that indigent patients should receive wonderful health care. But every treatment has its price.
毛病：Current insurance practices are discriminatory, furthermore they make insurance too expensive for the poor.
正确：Current insurance practices are discriminatory. Furthermore, they make insurance too expensive for the poor.
毛病：A two thirds vote was necessary to carry the measure.
正确：A two-thirds vote was necessary to carry the measure.
正确：We were aghast: The “charming country inn” that had been advertised in such glowing terms proved to be a leaking cabin full of mosquitoes.
正确：To get a high score—and who doesn’t want to get a high score—you need to devote yourself to prolonged and concentrated study.
毛病：She plays a wicked game of tennis.
正确：She excels in tennis.
毛病：John has been doing a science for years.
正确：John has been a scientist for years.
毛病：The blackened salmon’s been one of the restaurant’s most popular entrees.
正确：The blackened salmon has been one of the restaurant’s most popular entrees.
毛病：The president elect was invited to chair the meeting.
正确：The president-elect was invited to chair the meeting.
毛病：Cheung and Martha SAT talking about the movie in the office.
正确：Cheung and Martha SAT in the office talking about the movie.
毛病：His pro African sentiments were heartily applauded.
正确：His pro-African sentiments were heartily applauded.
3)操纵连词：Current insurance practices are unfair in that they discriminate against the people who need insurance most.这也是最有用的批改方式，从句仍然是自力的，由于它们利用并不普遍，很多门生写出来的句子没有标点毗连，则操纵逗号分开;例如：
My recipe for buttermilk biscuits contains flour, soda and buttermilk.
Gordon, who is a writer by profession, bakes an excellent cheesecake.
After the banquet, Harold and Martha went dancing.
毛病：The salesman spoke loudly, swayed back and forth, and tapped the table nervously, which made his customers extremely nervous.
正确：The salesman spoke loudly, swayed back and forth, and tapped the table nervously, mannerisms which made his customers extremely nervous.
毛病：His superiors have been following his progress. Some are more impressed than others. None are overwhelmed.
Current insurance practices are unfair they discriminate against the people who need insurance most.
1)标注句号：Current insurance practices are unfair. They discriminate against the people who need insurance most.
正确：Your instructions are as follows: read the passage carefully, answer the questions on the last page, and turn over your answer sheet.
毛病：Most buildings in the ghost town are recreations of the original structures.
正确：Most buildings in the ghost town are re-creations of the original structures.
毛病：She took an antiinflammatory drug for her sports injury.
正确：She took an anti-inflammatory drug for her sports injury.
毛病：The teacher told the student he was lazy.
正确：The student was lazy, and the teacher told him so.
2)标注分号：Current insurance practices are unfair; they discriminate against the people who need insurance most.操纵分号把具有自力意义的句式分开，应明白其所指称或代表的先行词