we are at a loss as to why.

来源：学生作业帮编辑：拍题作业网作业帮分类：英语作业时间：2024/05/28 06:19:57

we are at a loss as to why.
rt,为什么介词as to可省略?

这里最好别省
we are at a loss 后接that-从句时,as to"关于“作为介词,必须省略.因为介词一般不接that-从句
其结构为：
be at a loss+ that-从句
再问：那么这里的that到底是什么从句呢？
再答： as to 的宾语，宾语从句
再问：还有一个问题
we are at a loss as to explain the details.
这句中的as to是作介词短语吗？如果是，那么为什么后面不用-ing，而用explain原型。
再答：没见过这个说法，请问你这是想表达什么意思？我没看懂。
再问：说明细节的时候，我们茫然不知所措。
再答：那这显然是个错句。
因为：
“说明细节”的逻辑主语和句子的主语本是不一致的
还有as to 作为介词直接接do 是明摆着的问题
再问：逻辑主语应该是一致的，是我们说明细节的时候。
把explain改成explaining就对了吗？
再答：说明细节的时候，我们茫然不知所措
While explaining the details, we are at a loss.

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