as一般引导的让步状语从句，也可以引导的原因状语从句，取决于语境。 Child as he is, he knows a lot让步状语从句； Hard as he studied,he finally did get good marks in the exam.因状语从句。
as一般引导的让步状语从句，也可以引导的原因状语从句，取决于语境。 Child as he is, he knows a lot让步状语从句； Hard as he studied,he finally did get good marks in the exam.因状语从句。
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