()theories approximate the truth is the day-to-day business of science.

问题描述:

()theories approximate the truth is the day-to-day business of science.
A.Determinting how closely
B.How closely to determine
C.How one determines close
D.One is close to determining
求A为什么对,BCD为什么错详细解析.
为什么说这里的HOW引导的是感叹句?如果作为提问程度的特殊疑问句讲呢?

选A没有错.
How在这里所引导的句子即不可看成"感叹句",也不可看成"特殊疑问句",而是引导"宾语从句"
I.如果引导"特殊疑问句",那语顺如下.
How closely "do" theories approximate the truth (助动词提前构成问句)
全句译:请问这些理论跟真相有多么接近?
这样只能独立成句,而不能充当动名词"determining"的宾语
II.如果把其看成是感叹句,那语顺如下:
How closely theories approximate the truth!
全句译:这些理论跟真相是多么的接近啊!
虽然把其看成是感叹句与how引导的宾语从句语顺一样,但句意是完全变了.
III.
此句主语是动名词短语做主语,动名词determining的宾语由how引导的宾语从句来充当.主语 is the day-to-day business of science .
全句译:判断理论跟事实多么接近是日常的科学工作
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