as to 和as for有何区别

一般来说 as to 和 as for有相同意思， 并可互换，但有一个小小（却重要的）区别：

句子可用 as for 开头， 但不可用 as to 开头：

As for the tennis game, we'll have to reschedule it.

as to和as for以及as with的区别？

类似短语很多，如果最后一个词是介词，则是介词短语； 如果第二个词是连词，则是连词。不必作过细的语法分析，只要知道意思、会用就行了。这三个是介词短语。

but for, in addition to, instead of, apart from 等则是介词短语。

as if ,as though, in that, for fear that，now that, except that 等则是连词。

as for 用以转换话题,译作“至于”;用以表现态度.“至于……嘛”。

as to只涉及内容，而不涉及讲话人的态度,表示“关于…方面”、“有关…之事”，；用以重提旧事，表示“说到”之义；按照...

as with与...一样

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