填空题常考结构一、主句单一原则任何一个句子中只可能有一个主句。

例1：___, work songs often exhibit the song culture of a people in a fundamental form.(A) They occur where they are (B) Occuring where (C) Where they occur (D) Where do they occur例2: ___Indiana, is in a rich farming and dairy area, it is primarily a diversified industrial center (A) Fort Wayne (B) Although Fort Wayne(C) For wayne is in (D) Fort Wayne, in二、谓语动词专一原则:任何一个句子只可能存在一个谓语动词。

句子中不可能没有谓语动词，也不能多于一个谓语动词(除非中间存在连接词)。

例1：William Walker's mural, “Wall of Respect,”___an outdoor wall in Chicago, deals with social issues. (A) covers (B) covers it (C) which covers (D) which it covers例2：In copper engravings and etchings, ___caused by the edges of the plate is clearly visible on the paper. (A) the impression is (B) if the impression is (C) impressions (D) the impression三．平行结构技巧：如果填空题中空格的后面有and, 或者and后面有空格，那么这道题目一定是考察平行结构。

例1：The technique of recording, classifying, and___is known as accounting.(A) an enterprise's transactions summary(B) the summarizing of an enterprise's transactions(C) transactions of an enterprise are summarized(D) summarizing the transactions of an enterprise例2：Louis T. Wright, a surgeon, developed ingenious orthopedic braces, ___, and supervised the first use of Aureomycin on human patients.(A) treating skull fractures that he pioneered in (B) pioneered in treating skull fractures(C) which pioneered in treating skull fractures (D) he was a pioneer in the treatment of skull fractures四、填空题中关于宾语从句考的最多的两个结构： state(陈述，表明)+that indicate(指明,表明)+that例1：The quantum theory states ___, such as light, is given off and absorbed in tiny definite units called quanta or photons.(A) energy that (B) that it is energy (C) it is energy (D) that energy例2：Studies of the gravity field of the Earth indicate___yield when unusual weight is placed on them. (A) although its crust and mantle(B) its crust and mantle to(C) that its crust and mantle(D) for its crust and mantle to五、介词+ which结构:例1：In the United States, a primary election is a method ___voters select the nominees for public office. (A) that (B)by which(C)is that (D)by those例2: Croquet is a popular lawn game ------ players hit wooden balls through wire arches called wickers. (A) when (B) which(C) is when (D) in which六、in that结构例1：Mercury differs from other industrial metals ___ it is a liquid.(A) whereas(B) in that(C) because of(D) consequently例2：Hovercraft, or air-cushion vehicles, are unusual ___travel over land and water on a layer of air. (A)they (B)in they (C)that they (D)in that they例3：Emily Dickinson's garden was a place___great inspiration for her poems. (A) that she drew (B) by drawing her (C) from which she drew (D) drawn from which七、what 结构 what=the thing that例1：The chief foods eaten in any country depend largely on___best in its climate and soil.(A) it grows (B) what grows(C) does it grow (D) what does it grow例2：During the eighteenth century, Little Turtle was chief of the Miami tribe whose territory became___is now Indiana and Ohio. (A) there (B) where (C) that (D) what八、同位语结构:名词作主语，主语同位语___, __ _, ___ (两个逗号)例1：The tongue , ___, is an important aid in chewing and swallowing .(A) is the chief organ of taste(B) tasting the organ chiefly(C) the chief organ of taste(D) the organ chiefly tastes名词作主语，后面的名词是主语同位语，解释说明后面的名词___, ___ (一个逗号)例2：A prolific writer of prose and verse, ----of Native Americans in her novel, Century of Dishonor.(A) Helen Hunt Jackson took up the cause(B) the cause taken up by Helen Hunt Jackson(C) was Helen Hunt Jackson's cause(D) the cause that Helen Hunt Jackson took up.例3：Often very annoying weeds ,___and act as hosts to many insect pests.(A) that crowd out less hardy plants than goldenrods (B) crowding out less hardy plants by goldenrods (C) the goldenrod's crowding out of less hardy plants (D) goldenrods crowd out less hardy plants主谓宾后面出现一个名词，名词可以作宾语或者表语的同位语例4：An Olympic marathon is 26 miles and 385 yards, approximately___from Marathon to Athens.(A) the distance is (B) that the distance is (C) is that the distance (D) the distance九、比较结构比较结构中：1、倒装性；2、对称性例1：Western Nebraska generally receives less snow than___eastern Nebraska. (A) does (B) in(C) it does in (D) in it does例2： Hot objects emit___do cold objects.(A) rays more than infrared(B) rays are more infrared than(C) more than infrared rays(D) more infrared rays than比较结构中相互比较的必须属于同一种事物例例3：The activities of the international marketing researcher are frequently much broader than___. (A) the domestic marketer has(B) the domestic marketer does(C) those of the domestic marketer(D) that which has the domestic marketer例4：The annual worth of Utah's manufacturing is greater than --.(A) that of its mining and farming combined(B) mining and farming combination(C) that mining and farming combined(D) of its combination mining and farming十、定语从句省略结构关系代词在定语从句中做宾语时可以省略例1：Most crocodiles will eat anything----capture and overpower.(A) can (B) they can(C) which can (D) and例2：A majority of people in the United States can get all the calcium their bodies----from the food they eat.(A) require (B) requires(C) requiring (D)to require十一、状语从句省略结构Metals expand when they are heated. Metals expand 是主句；when they are heated 两个条件：第一、从句主语和主句主语必须保持一致；第二、从句的谓语必须是be动词，主语和be动词同进同出，要么同时省略，要么同时保留。