__,if he does not learn ,he knows nothing
选项:A. Be a child ever so clever B.Is a child ever so clever C.A child be so clever D. A child is ever so clever
选A，其中if he does not learn 是插入语，选项A为非独立主格结构
A child is ever so clever ······
A. Be a child ever so clever B.Is a child ever so clever C.A child be so clever D. A child is ever so clever 首先，这个题目是不完整的，需要上下文context。 其次，如果要讨论让步状语从句的话，应当选A。 再次，即使选A 仍然可能存在歧意，其意思应当是Although he is so clever a child，尽管他是一个如此聪明的孩子；而不是Although a child is so clever, 尽管孩子都如此聪明（这个意思的表达应当是Be so clever a child）。
答案A. Be a child ever so clever
__,if he does not learn ,he knows nothing A. Be a child ever so clever B.Is a child ever so clever C.A child be so clever D. A child is ever so clever 【答案】 ：A 【解析】 ：需要非谓语形式，因为主句有谓语 knows
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