OG10语法268题及GWD22语法总结四十八
47. Displays of the aurora borealis, or "northern lights," can heat the atmosphere over the arctic enough to affect the trajectories of ballistic missiles, induce electric currents that can cause blackouts in some areas and corrosion in north-south pipelines.
A. to affect the trajectories of ballistic missiles, induce
B. that the trajectories of ballistic missiles are affected, induce
C. that it affects the trajectories of ballistic missiles, induces
D. that the trajectories of ballistic missiles are affected and induces
E. to affect the trajectories of ballistic missiles and induce
1.习语： enough to do sth.（一级拂拭B,C,D）
can heat... enough to affect in A and E is more idiomatic than the use of the subordinate clause beginning with that
2.平行构造：（二级拂拭A,）
数的同等和时态的同等
平行构造只要两个的时候必需用连词，不能只用逗号。 A，B＝＝＞Ａand B
Induceè带来
Affectè影响
两个都是笼统举措
3.单双数同等
C lacks agreement in using the singular pronoun it to refer to the plural noun displays;
4．句子完整性 and D is faulty because induces cannot fit grammatically with any noun in the sentence.è没有动词发起者
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