gmat sc備考比較結構難句補充

1、1. 省略的名詞，其單復數(shù)必須一致。如果單復數(shù)不一致，則不可以省略，需要補出名詞。Her company did better last year（錯，Those無指代）n those of her competitors.Her company did better last yearcompetitors.n the companies of her Saeits and moisture threaten to destroy the Mohenjo-Daroexcavation in Pakistan, the site of an ancient civilizationtflour

2、ished at the same time as those/the civilizationshe NileDelta and the river valleys of the Tigris and Euphrates.2. 省略的內容，可以是動詞、量詞、狀語，甚至整個句子。I walk fastern James (walks/does).Whereas I drink 2 cups of milk a day, my friend drinks 3 (cups).Now I walk as fast as I walked when I was a child.3. 狀語比較時，可以省

3、略n后面整個主句，不管時態(tài)是否一致。例如上面的句子，I walk 與 I walked時態(tài)不一致，但是都省略了，比較的重點是時間now和when I was a child4. 時間狀語的比較，能否省略取決于n前面是否有相應的時間狀語。有的話，n后面主句可以省略；沒有的話，n后面需要補出主謂，以避免比較對象上的歧義。To develop more accurate population forecasts, demographerswould have to know a great deal moren（they do） now aboutthe sol and economic deter

4、minants of fertility.they do不能省略，因為n前面沒有和now相應的之間狀語。A large risehe number of housing startshe coming yearshould boost new construction dollars by several billion dollars,making the construction industrys economic health muorerobustn (it was) five years ago.it was不能省略，因為n前面沒有和five years ago相應的狀語。Soar

5、ingevicosts accounted for moren half the spendingheialn of 1992, a greatroportionn inany previous election.in any previous election前面沒有補出t/it was，因為n前面有heialn of 1992與in any previous year相對應。5. 完整主謂賓結構是語態(tài)的時候，狀語比較，省略的通常還是n后面整個句子（與主動語態(tài)相同處理），如果不采用省略結構，通常是【主語+補出助動詞be】。如果僅補出be后面的done而省略Be，要看后面是否存在語義上的歧義。

6、例1：【In Japan】 elderly people are treated with far GREATERrespectN they are 【ost Western countries】例2：According to public health offils, in 1998 Massachusettsbecame these in whiore babies were born to women【overof thirty】n【under it】. 僅補出born，會產生underit修飾born的歧義。例3：In no other historical sighting did

7、Halleys Comet cause such aworldwide sensation as in its return of 19101911.名詞省略的其他例句：While it costs about the same to run nuclear plants as othertypes oflants, it is the fixed costst stem from buildingnuclear plants generate electricity.t makes it more expensive for them to（OG107）(A) While it costs

8、about the same to run nuclear plants as othertypes oflants, it is the fixed costst stem from buildingnuclear plantst makes it more expensive for them togenerate electricity.(B) While the cost of running nuclear plants is about thesame as the cost for other types of er plants, thefixed costst stem fr

9、om building nuclear plants makethe electricity they generate more expensive.(C) Even though it costs about the same to run nuclear plants asfor other types oflants, it is the fixed costst stemfrom building nuclear plantst makes the electricity theygenerate more expensive.(D) It costs about the same

10、to run nuclear plants as for othertypes oflants, whereas the electricity they generate ismore expensive, stemming from the fixed costs of buildingnuclear plants.(E) The cost of running nuclear plants is about the same as othertypes oflants, but the electricity they generate is mademore expensive bec

11、ause of the fixed costs stemming frombuilding nuclear plants.at speeds much higher n (speeds t) are currently sibleThose small domestic mills will take more businesses from thebig American steel millsby the foreign steel millsn (thoset) would have been takenhe absence of quotas. (主動、比較)Currently, re

12、searchers collect far more background informationon patientsn (t which) is strictly required for their trials.（省略t which）Only seven people this century have been killed by the greatwhite shark, the man-eater of the movies fewer n (thosewho) have been killed by bee stings.As is the case:There are hop

13、eful signst we are shifting away from our heavyreliance on fossil fuels:moren ten times as much energy isgeneratedthroughwind(generated through windernowaswasthecaseer nown it was ) in 1990.（括號中是錯誤選項，為什么不能用 it was？it 什么時候用？）As is the case with traditional pharmacies, prescriptions are thecornerstone

14、 of a sucsful on-line drugstore, since it is primarilyprescriptionstract the customers, who then also buy otherhealth-related items.A new genetically engineered papaya was produced not byprofit-motivated seed companies, as was the case with mostgenetically modified crops previously approved for comm

15、erlofuse,butbyuniversityandUnitedSesDepartmentAgriculture researchers who allowed growers to use it freeofcharge.助動詞補出或者不補出：Among lowaid workers, union members are less likely nnonunion members to be enrolled in lower-end insurance planst ime stricter limits on medical serviand requiredoctors to see

16、 more patients, spending less time with each.According to a 1996 study published in the Journal of HumanResou, Americans of Middle Eastern descent were twiceaslikely as the average American to be self-employed tobeself-employed.Results of a United Ses study published in the Annalsofernal Medicine ha

17、ve shownt college-educated women andwomen living he Sound West are significantly more likelyto use supplemental hormones n women livingin theNortheast and Midwest.補出助動詞：Many teenagers undergo stress, but results of a recent studyindicatet the patterns of stresst girls experience are morelikely to re

18、sult in depresn are thoset boys experience.No other food available to the birds on Delawares beaches is asnutritious and acsible as are crab eggs.t/those VS. it/they:（同名不同物用 t/those；同名同物用 it/they）Todays technology allows manufacturers to make small cars more fuel-efficient now n at any time in their

19、 production history. ( C )A.B.small cars more fuel-efficient now n at any time heirsmall carst are more fuel-efficient不能用 theyn they were at anytimeheirC.small carst are more fuel-efficientn those atany other time inD.more fuel-efficient small cars theirn those at any other time inE.more fuel-effici

20、ent small cars nown at any time in同一個東西自己比較，用 ittheyTo develop more accurate population forecasts, demographerswould have to know a great deal more n they do now aboutthe sol and economic determinants of fertility.Betn 1990 and 2000 the global economy grew more n itdid during the 10,000 years from t

21、he beginning of agriculture to 1950.24. (25819-!-item-!-188;#058&002130)Employment costs rose 2.8 percenthe 12 monthst endedt ended inin September, slightly lessn they didhe yearthe previous quarter.Previously thought:A one-million-year-old skull bearing traits assotedwith bothHomo erectus and Homo

22、sapiens has been found in the Afarregion ofEritrea, indicatingt modern humans developedmuch earr n previously thought.Scientistshave found signst moving water changed thechemical makeup of the surface of Mars in recent eras and havetherefore concluded t the planets crusrbors up to threetimes as much

23、 water as previously thought.A surge in new home sales and a drop inkly unemploymentclaimggest t the economy might not be as weak as (theeconomy t) some ysts previously thought (to be).The company announcedt its profits declined much less inthe second quarternysts had expected and t itsbusiness would improvehe second half of the year.同一個東西，不同時間比較，比較中一定會有時間差Recent research indicatest two popular arthritis drugs maynot be as safe as they were initially beved to be.比較在倒裝和否定中：In no other historical sighting did Halleys comet causeworldwide sensation as in its return of 1910-1911.su