五、句子的结构来源：考试大 句子的结构主要考查四个出题方向。 (一) 主语的重复来源：考试大 名词 代词 谓语，这个代词永远是重复的主语，永远是错的 例：Woodrow Wilson he was an idealist who refused to make any A B compromises concerning the establishment of the C D League of Nations. 分析：代词he不是同位语，主语重复；如果是下面这样的主语，那么便是主语同位语 A prolific writer, Woodrow Wilson 例：Two unique features of the Arctic they are A B lack of precipitation and permanently frozen ground. C D 分析：选项B中的they和前面的主语two unique features重复 (二)谓语的重复来源：考试大 完整的句子后面又多了一个谓语，往往改为定语从句 例：A paragraph is a portion of a text consists of 来源：考试A B one or more sentences related to the same idea. C D 分析：B错，应改为consisting of或which consists of。句中有两个无法连接的谓语动词，而且前一个谓语动词下面没有划线，故改consists为非谓语动词形式或在它前面加which使之成为从句谓语动词。 (三)谓语的缺少来源：考试大 例：Most mammals to maintain a relatively constant body A B temperature, regardless of what the air temperature might be. C D 分析：A错，应改为maintain。句中缺谓语动词，故去掉不定式符号to 使maintain变成谓语动词。 (四)主句的重复 主句的重复总是考even, instead, during, despite等引导的句子, 但是实际上它们无法把两个句子连接起来，因为它们都是副词或者介词，连接两个句子应该用连接词连接 例：Salmon spend most of their adult lives in salt water, despite A B C they return to their freshwater birthplaces to spawn and die. D 分析：C错，应改为though。despite是介词，后面一般接名词作宾语，而在句中它后面却跟着一个完整的句子，所以改为连词though。 例：Solar eclipses occur during the Moon s shadow 来源：考试大A B sweeps across the face of the Earth. C D 分析：B错，应改为when或as。介词不能引导条件状语从句，根据题意改为从属连词when或as。 例：Even many early leaders of the United States have provided A B names for towns, only George Washington 来源：考试大 C is remembered in the name of a state. 来源：考试大 D 分析：A错，应改为Even though。even为副词，不能引导从句，根据题意，改为引导让步状语从句的Even though。