None of this is to say that-从句，想问一下各位老师，这个句型是This is to say 的否定形式么？ be to say 是什么使用方法？谢谢。
可以如此理解。
1. This is to say... 这意思是说......，这意味着......
2.None of this is to say... 这都不是说......，这类都不意味着......
除此之外，这种表达不只限于to say，假如需要，其他动词也可以。
This is to do... 这是为了......，如此做目的是......
This is to say he is a fool.
换句话说，他是个傻瓜。
This is to help her to come to terms with her early upbringing and make sense of past experiences.
这旨在帮助她认同自己早先所受的教育，并让她知道自己过去的历程。
But this is to begin literary culture at the wrong end.
但，这恰恰将文学的修养过程本末倒置。
None of this is to dismiss all the concerns of the secular opposition.
所有这所有都不可以打消世俗反对派的担心。
None of this is to argue against broadening the range of company directors.
这类都不是反对扩大公司董事范围的原因。
None of this is to absolve governments and regulators of responsibility for the crash.
所有这类并非在为政府和监管部门开脱责任。
