とは思いもよらなかった

never would have thought

→ と
phrase Rare #41,060
never would have thought Used after a statement to express that something was completely unexpected.
JA: 彼がそんなことをするとは思いもよらなかった。
EN: I never would have thought he’d do something like that.

彼が嘘をつくなどとは思いもよらなかった。

It never occurred to me that he would lie.

トムがこんなに間抜けだとは思いもよらなかった。

I never imagined Tom could be such an idiot.

あの日彼女に会おうとは思いもよらなかった。

I never imagined I would meet her that day.

会長が個人的に私の手紙に返事をくれるとは思いもよらなかった。

I never imagined that the chairman would personally reply to my letter.