7.Carnivorous mammals can endure what would otherwise be lethal levels of body heat because they have a heat-exchange network which kept the brain from getting too hot. (A) which kept (B) that keeps (C) which has kept (D) that has been keeping (E) having kept
解释里面有一段话说"The pronoun which introduces nonrestrictive clauses, which include information relevant but not critical to an understanding of the sentence. The pronoun that introduces a restrictive clause, which is critical to understanding the sentence because the clause defines its antecedent. Here, the clause following which defines heat-exchange network, so that must be used in place of which. " 我想问一下,which不是也可以引导限制性定语从句嘛?为什么这里一定要that替换which啊?难道如果有which keeps就不选这项么?
另外,在另一道题的解释中说,非限制性定语从句中关系代词which要immediately follow its referent,是这样的么?
which 可以引导限定性定语从句,在og后面的例子里会见到。which keeps 也对 限定性或非限定性引导词需紧跟其修饰的引导词,绝大部分情况不允许跳跃,但是如 a of b that that clause 也可能修饰 a 非 b, 但可以通过从句中的动词的单复数形式判断修饰对象。极少数题里也出现了 a, + 介词结构, + which clause 从句跳过了介词结构修饰了 a
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