Can I use "By the way" instead of "After all" in these sentences?

1. I don't know why you're so concerned - it isn't your problem after all.

= I don't know why you're so concerned - it isn't your problem by the way.

2. I don't know why you're so concerned ; after all, it isn't your problem.

= I don't know why you're so concerned ; by the way, it isn't your problem.

3. You don't need to call him. After all, he never calls you.

= You don't need to call him. By the way, he never calls you.

Original Post

Hi, Toaha,

Unfortunately, "by the way" (which means "incidentally") does not work well in those sentences, while "after all," which expresses contrast, does.

Hi,

I completely agree with Gustavo that there is a very big difference between 'by the way' and 'after all' when 'after all' is used for contrast. However, in your examples above, 'after all' is used to add further information which supports something you have just said. This information should be totally connected to the subject you are talking about and must be highly valid. Here's an example:

I do like her - after all, she is my sister. (Cambridge dictionary)

Your first example is found on 'LDOCE' here:

https://www.ldoceonline.com/dictionary/after-all

'By the way' can be used as a way of changing the subject or to give further information that has just come to mind. It may not be directly related to the subject being discussed. Here's an example from (Cambridge dictionary): "Oh, by the way, my name's Julie."

That's why, in all your three examples, 'after all' works much better than 'by the way' as Gustavo has indicated.  

 

Last edited by ahmed_btm

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