2015年11月gmat語法機經：While的用法

　　While的用法

　　機經回想

　　另有一道幾個選項分離湧現了unlike, while 之類的，然則這幾個我都沒選，那題應當是考比較的;

　　相幹常識點

　　a. 強比較：Recently implemented "shift-work equations" based on studies of the human sleep cycle have reduced sickness, sleeping on the job, and fatigue among shift workers while raising production efficiency in various industries.

　　b.妥協：While all states face similar industrial waste problems, the predominant industries and the regulatory environment of each state obviously determine the types and amounts of waste produced, as well as the cost of disposal.

　　相似考題

　　1. In January 1994 an oil barge ran aground off the coast of San Juan, Puerto Rico, leaking its cargo of 750,000 gallons into the ocean, while causing the pollution of the city’s beaches.

　　A. leaking its cargo of 750,000 gallons into the ocean, while causing the pollution of

　　B. with its cargo of 750,000 gallons leaking into the ocean, and it polluted

　　C. and its cargo of 750,000 gallons leaked into the ocean, polluting

　　D. while it leaked its cargo of 750,000 gallons into the ocean and caused the pollution of

　　E. so that its cargo of 750,000 gallons leaked into the ocean, and they were polluting

　　2. After several years of rapid growth, the healthy care company became one of the largest health care providers in the metropolitan area, while it then proved unable to handle the increase in business, falling months behind in its payment to doctors and hospitals.

　　A. while it then proved unable to handle the increase in business, falling months behind in its payment to

　　B. while it then proved unable to handle the increase in business and fell months behind in its payment to

　　C. but then it proved unable to handle the increase in business, falling months behind in its paying

　　D. but then proving unable to handle the increase in business, falling months behind in paying

　　E. but then proved unable to handle the increase in business, falling months behind in paying

　　剖析：

　　1.AD內裏的while引誘從句邏輯幹系錯的，這裏並無任何比較大概妥協的意思，而是有因果幹系，由於貨色掉入海裏，以是造成汙染。B內裏的it和E內裏的代詞they都沒有公道的指代工具。謎底選C，polluting在句子末端處，做成果狀語。

　　2.AB直接消除，由於這句話先後是遷移轉變不是妥協的意思，以是不克不及用while，要用but。D選項but先後不屈行，前面是句子，背面是proving，排掉。末了CE選項內裏，動詞paying優於動名詞its paying，同時C

　　內裏的主語it過剩，謎底選E。