I've asked a question on HOW COME and found out that a question like "How come that it is possible?" is more like a dialectal variation or an older form that few people consider as natural.
Now, I've got another question.. What's the difference between these two sentences below?
a. How come is that possible? / b. How come that is possible?
As far as I know, HOW COME requires its following sentence not to be inverted, while WHY necessitates the inversion. The sentence as in (a) thus confuses me now.
Is there any difference in usage between the two sentences?
Thank you in advance.
Best Answer
Yes, that is correct. So it is completely normal that your sentence (a) confuses you, because there, you do use inversion after how come.
The standard statement is:
A question with why:
So indeed, you use inversion of is and that.
Question with how come:
As you said, no inversion.
If you do use inversion after how come, the sentence will be ungrammatical.