was interesting
あれ、興味深かったね?
That was interesting, wasn't it?
その映画は私達みんなにとって興味深かった。
That movie was interesting to all of us.
旅行で食べたもので一番興味深かったものは何ですか。
What was the most interesting thing you ate on your trip?
その話はとても興味深かった。
That story was very interesting.