Sentence examples for then why from inspiring English sources

"then why" is a correct and commonly used phrase in written English
You can use "then why" when asking for a reason or explanation for something previously mentioned. It can also be used to express doubt or confusion about a situation. Example: "You told me you were going to the store, then why are you still at home?" In this example, the speaker is questioning the reason for the person's actions, as they are not following through with their stated plan.