问题: as to 在这里起到什么作用? 能不能举例说明一下!
he had carefully prepared his will(遗嘱) as to how his wealth would be settled-to sell his entire collection at an auction
解答:
as to 常常与wh-疑问词引导的动词不定式和名词从句连用（有时可省 略）,是介词短语.如：
Nobody could decide (as to)what to do. 谁也不能决定该做什么。
He is very uncertain as to whether it's the right job for him. 关于他究竟是否适合做这项工作，他实在拿不准
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