last week our english teacher set so difficult an examiation problem as none of us worked out
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时间：2024-08-17 10:50:48
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last week our english teacher set so difficult an examiation problem as none of us worked
【专家解说】：用as 和 that 这个句子的性质就变了 一个是定语从句 一个是 结果状语从句 要是表示 结果的话 就 用as
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