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英语几道名词性从句的题!谁会?(详解)

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英语几道名词性从句的题!谁会?(详解)
1)No one knows exactly _d_ this important discovery was made.
A that B that how and when C how or why D how or when
2)I haven't found my pen yet.In fact,I am not sure _d_I could have done with it.
A whether B where C how D what
3)He often thinks of _b_ he can do more for his country.
A what B how C that D which
4)Mr.Green goes to his office on foot every day_c__it rains heavily.
A when B except C except when D but
5)They have decided to go on a trip to the Great wall,but _a__they are to do so hasn't been made clear yet.
Awhen B what C where D whether
6)Don't tell the news to __a_.
A whoever you meet B whoever is it C whichever he wants D whoever wants
7)The true value of life is not in __b_.
A which we get,and what give us B what we get,but what we give
C which we get,and what we give D how we get,but that we give
(1)how or when直接作并列疑问词,引导宾语从句;根据句意,不应该问“为什么”,而只能是“怎样或者什么时候”;
(2)只有“what”可以引导宾语从句;
(3)宾语从句基本完整,不能用“what”、“that”、“which”这些,它们都需要充当必要成分如主谓宾,此处由“how”引导方式状语从句;
(4)“除了下大雨的时候”用“except”表示“除了”,同时后面是一个完整的从句,需要有引导词,用“when”表示“当...的时候”;
(5)句意题,已经确定去,不用“whether”,决定去长城,不用“where”,只能用引导时间状语从句的“when”;
(6)名词性从句,表示任何遇到的人,只能用“whoever”,且句子结构要完整;
(7)宾语从句,用“what”引导表示“得到或者付出的东西”.
希望于你有助!