摘要： A man does not know the difficulty of anything he does it personally . A. although B. if C. because D. unless 答案是D项.连词unless本身具有否定意义:if - not.引导的是否定的条件句.这种否定的条件句从反面来表达强烈的语气.一些语法学家称它为"反面的唯一条件句"又如:One cannot master a foreign language well unless he studies it hard . (不下苦功夫.是学不好的一门外国语的.)
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A man does not know the difficulty of anything _____ he does it personally .
A. although B. if C. because D. unless
查看习题详情和答案>>A man does not know the difficulty of anything_________ he does it personally.
A. although B. if C. because D. unless
查看习题详情和答案>>A man does not know the difficulty of anything _____ he does it personally .
A. although B. if C. because D. unless
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