五、句子的結(jié)構(gòu)來源：考試大 句子的結(jié)構(gòu)主要考查四個出題方向。
(一) 主語的重復來源：考試大 名詞+代詞+謂語，這個代詞永遠是重復的主語，永遠是錯的
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：代詞he不是同位語，主語重復；如果是下面這樣的主語，那么便是主語同位語
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：選項B中的they和前面的主語two unique features重復
(二)謂語的重復來源：考試大 完整的句子后面又多了一個謂語，往往改為定語從句
例：A paragraph is a portion of a text consists of
來源：考試A B
one or more sentences related to the same idea.
C D
分析：B錯，應改為consisting of或which consists of。句中有兩個無法連接的謂語動詞，而且前一個謂語動詞下面沒有劃線，故改consists為非謂語動詞形式或在它前面加which使之成為從句謂語動詞。
(三)謂語的缺少來源：考試大
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錯，應改為maintain。句中缺謂語動詞，故去掉不定式符號to 使maintain變成謂語動詞。
(四)主句的重復 主句的重復總是考even, instead, during, despite等引導的句子, 但是實際上它們無法把兩個句子連接起來，因為它們都是副詞或者介詞，連接兩個句子應該用連接詞連接
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錯，應改為though。despite是介詞，后面一般接名詞作賓語，而在句中它后面卻跟著一個完整的句子，所以改為連詞though。
例：Solar eclipses occur during the Moon's shadow
來源：考試大A B
sweeps across the face of the Earth.
C D
分析：B錯，應改為when或as。介詞不能引導條件狀語從句，根據(jù)題意改為從屬連詞when或as。
例：Even many early leaders of the United States have provided
A B
names for towns, only George Washington
來源：考試大 C
is remembered in the name of a state.
來源：考試大 D
分析：A錯，應改為Even though。even為副詞，不能引導從句，根據(jù)題意，改為引導讓步狀語從句的Even though。
(一) 主語的重復來源：考試大 名詞+代詞+謂語，這個代詞永遠是重復的主語，永遠是錯的
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：代詞he不是同位語，主語重復；如果是下面這樣的主語，那么便是主語同位語
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：選項B中的they和前面的主語two unique features重復
(二)謂語的重復來源：考試大 完整的句子后面又多了一個謂語，往往改為定語從句
例：A paragraph is a portion of a text consists of
來源：考試A B
one or more sentences related to the same idea.
C D
分析：B錯，應改為consisting of或which consists of。句中有兩個無法連接的謂語動詞，而且前一個謂語動詞下面沒有劃線，故改consists為非謂語動詞形式或在它前面加which使之成為從句謂語動詞。
(三)謂語的缺少來源：考試大
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錯，應改為maintain。句中缺謂語動詞，故去掉不定式符號to 使maintain變成謂語動詞。
(四)主句的重復 主句的重復總是考even, instead, during, despite等引導的句子, 但是實際上它們無法把兩個句子連接起來，因為它們都是副詞或者介詞，連接兩個句子應該用連接詞連接
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錯，應改為though。despite是介詞，后面一般接名詞作賓語，而在句中它后面卻跟著一個完整的句子，所以改為連詞though。
例：Solar eclipses occur during the Moon's shadow
來源：考試大A B
sweeps across the face of the Earth.
C D
分析：B錯，應改為when或as。介詞不能引導條件狀語從句，根據(jù)題意改為從屬連詞when或as。
例：Even many early leaders of the United States have provided
A B
names for towns, only George Washington
來源：考試大 C
is remembered in the name of a state.
來源：考試大 D
分析：A錯，應改為Even though。even為副詞，不能引導從句，根據(jù)題意，改為引導讓步狀語從句的Even though。