搜搜做题作业网No one can walk the wire without a bit of fear unless ____ve
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No one can walk the wire without a bit of fear unless ____very young
A having been trained
B trained
C to be trained
D being trained
我选的A可是答案是B,为什么?这题考的是什么语法点?
A having been trained
B trained
C to be trained
D being trained
我选的A可是答案是B,为什么?这题考的是什么语法点?
having been trained 既表进行又表完成,这里不需要进行时,没有强调过程,如果要选A 需要在后面加上一个since,表达自从很小就受过训练.
C意思完全不对.D 表达一直在被训练和后边的very young不符合.
trained过去分词,表示被动
故选B是对的,完整句子应该是unless（ he or she） （is） trained（ when） very yong.
考查的就是unless引导的条件从句省略了he is
C意思完全不对.D 表达一直在被训练和后边的very young不符合.
trained过去分词,表示被动
故选B是对的,完整句子应该是unless（ he or she） （is） trained（ when） very yong.
考查的就是unless引导的条件从句省略了he is
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