题目内容
11.This kind of animals has never been protected from being killed ______there are few ones left in the world.( )A. | after | B. | until | C. | unless | D. | when |
分析 这种动物从来没有受到保护不被猎杀,现在全世界所剩无几了.
解答 答案:B 题干中前面用的是完成时态,后面用的是现在时态,表示前面的动作对现在造成的结果;after之后,until直到,unless除非,when当…时候;句意表达的是直到现在,表示从过去持续到现在的动作.故选B.
点评 从属连词是连词的一种,用来引导名词性从句和状语从句.大致可分为三大类:that(无词义,不做成分)if,whether (表达是否的意义,但不做句子成分); 连接代词:who,whom,whose,what,which,whatever,whoever,whichever(有词义,在句子中可作主语、表语、宾语);连接副词:when,where,why,how,how many,how long,how far,however,whenever,wherever (有词义,作从句的状语).学习时,要注意区分和掌握.
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