Again as __________ in this experiment, he didn′ t lose heart.A.he failedB.did he failC.he did failD.had he failed
Again as __________ in this experiment, he didn′ t lose heart.
A.he failed
B.did he fail
C.he did fail
D.had he failed
B.did he fail
C.he did fail
D.had he failed
参考解析
解析：考查让步状语从句。as／though引导的让步从句必须将表语或状语提前(形容词，副词，分词，实义动词提前)。但需注意：①句首名词不能带任何冠词。②句首是实义动词，其他助动词放在主语后。如果实义动词有宾语和状语，与实义动词一起放在主语之前。句意为“在这次实验中，他又一次失败了，但是他从未失去信心”。故选A。
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