涉及倒装的主语一致考题讲解

涉及倒装的主语一致考题讲解
 
Mr Smith has bought a little house in the country, around _________ some green trees.
A. which is               B. it is                      C. which are            D. them are
【分析】此题容易误选AB,将AB中的 which it 误认为是其后句子的主语。其实,此题的最佳答案为Caround which are some green trees 是一个由介词+which”引出的非限制性定语从句,而在该从句中,主语是 some green treesaround which 是表语,所以句子谓语应用are,而不是 is。请看类例:
Among these people was a foreigner from Europe. 他们当中有一个来自欧洲的老外。(句子主语是 a foreigneramong these people 是表语,所以谓语动词用单数 was)
On the top of the tree were some birds. 树顶上有一些鸟。(句子主语为 some birdson the top of the tree 是表语,所以谓语动词用复数 were)
The police found a large box under his bed, in which were some sex books. 警察在他的床底下找到一只大箱子,里面装的是一些黄色书籍。(in which were some sex books 为非限制性定语从句,在该从句中,in which 是表语,some sex books 是主语,所以谓语动词用复数were)
 

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