Examples of using "そうなんだ。" in a sentence and their english translations:
It is always the case with her.
I wonder why Tom always looks sleepy.
How sad that girl looks!
I bet he arrives late - he always does.
I'm afraid the bank is going to repossess my house.
Tom likes Mary, and so do I.
My brother seems to enjoy himself at college.
"Recently I haven't been doing any calligraphy", "Is that so?, if you practice often you will lose your touch."
I see.
"Ah ... I'm just not feeling so well" "Really? Are you OK?" "Heh-heh. Actually I'm playing hooky."
"About tom, he wears the same clothes all year around?" "That is true, when I visited his house the clothes hanger was lined up with all the same clothes. But he seems to be obsessed with branding."