1.The choreographer Katherine Dunham having trained as an anthropologist,she studied dance in Jamaica,Haiti,and Senegal.

　　Katherine Dunham,who was also a trained antropologist,studied

　　点评：K是一个编舞家，同时又学过人类学。所以用…also…结构。同时K作为主语，通常放在句首，后接一个句，再接谓语。在描述某人时正确语序经常如此。

　　2. Weight training was begun by the girl to enhance her strength and flexibility.

　　The girl had begun the exercise of weight training to enhance

　　点评：搭配不当。因该是”begin exercise” 放入句中，用过去完成时。同时注意主语最好放在句首，一般勿倒装。

　　3.One of the most common types of mistakes that inexperienced drivers make is failing to signal for a lane change;another one that occurs about as frequently is exceeding posted speed limits.

　　点评：Right! 首先，检查主谓一致性，无误。由于前面是一个句子，后面也是一个句子，为避免Run-on，应用分好隔开(两句无因果关系)。同时注意”another” 和”another one”用法。

　　4. Although talent may be a crucial element on the road to fame,it is difficult to succeed without a highly developed work ethic.

　　without a highly developed work ethic,succeeding is difficult.

　　点评：目前不知道为何这样改，大家研究一下。但又数个同类型题都如此，经验就是形如 “Although…另一个东西也必要”后一定要按意思届一个“without”而不用“It is…”

　　5.(常考题：转折) Some taxpayers knowingly violate IRS regulations when filing their tax returnes,in other respects they are law-abiding citizens,however.

　　Some taxpayers who are otherwise obedient citizens knowingly violate IRS regulations in their tax returns.

　　点评：首先注意意思，应为：尽管一批人在其它方面守法，但在某一方面却知法犯法。最好将主句放在最前，用顺叙。这个极重要，因为可以看出在许多题中顺叙比倒装好。

　　6. Although my alarm clock did not go off,causing me to arrive no more than ten minutes late.

　　it did not cause me to arrive more

　　点评：对于这种“Although…”的形式，几乎所有正确答案都将逗号后的句子的主语放在前面，组成一个顺叙句。

　　7. Eating foods rich in carbohydrates before a race is common among marathon runners,all of them need reliable energy sources for peak performance

　　of whom need

　　点评：注意主语

　　8.Los Angeles’s freeways,usually busier and more crowded than those of other cities,are clogged almost twenty four hours a day,contributing to the city’s pollution problem.

　　Right!

　　点评： 首先，无论指代，主谓还是时态，本句没有问题，且又是顺叙，直接用“Los Angeles’s freeways”而不用“the freeways of Los Angeles”，所以是正确的。

　　9.(常考题：修辞对象)Set in the sixteenth century,modern audiences enjoyed the contemporary opera Galileo Galilei written by Philip Glass.

　　century,Philip Glass’s contemporary opera Galileo Galilei has enjoyed great success with modern audiences.

　　点评：注意形容的对象和形容的部分要相邻为好，同时注意顺叙，用“Philip Glass’s contemporary opera”而不是“the contemporary opera Galileo Galilei written by Philip Glass.”

　　10. Whenever television is denounced by viewers for its violence, they call on the department of standard and practice to take action.

　　Whenever viewers denounce television for its violence,they call

　　点评： 这样改使句子十分完整，谁“denounce”?是“viewers”，且viewers call…for practice. 同时还是要强调顺叙，不要用被动态。主语为“viewers”而不是“television”

　　11. Toward the end of the 1990s,it became clear that Internet-based companies were overvalued in the stock market,since such is the case,their stock prices have dropped considerably in recent years.

　　and consequently their stock prices have dropped considerabley in recent years

　　点评：这一类语句表因果。很多错误选项都在后面届一个句子并以“because of that”，“as a result”，“for this reason”。其实都不对。直接用“consequently”顺接表结果。 像“as result”一般中间应用分号隔开。

　　12. (常考题：转折) Abraham Lincoln is frequently lauded as a successful politician,and his early political career was dominated by a string of lost elections.

　　Although Abraham Lincoln is frequently lauded as a successful politician,

　　点评：这一类语句表转折，故要有转折词。“however”一般前有分号或后用逗号相联系(句首除外)。 “Inasmuch”太繁。故常用Although，用逗号和下半句相连。

　　13.The romance between Yum-Yum and Nanki-Poo accounts for the lasting appeal of the Mikcado,as do Gilbert and Sulliran’s singable tunes and clever lyrics to…

　　accounts for the lasting appeal of the Mikado,as do

　　点评：动词用复数形式。