It's not uncommon to hear talk of UFOs.
ＵＦＯの話を聞くのは珍しいことではない
It's not worth a penny.
それは一文の価値もない
It's O.K. by me.
私はそれでＯＫ
It's odd (that) he didn't mention it here.
ここで彼がそれに言及しなかったのはおかしい
It's odd that the door is closed.
ドアが閉まっているのは妙だ
It's of no consideration at all.
まったく取るに足らないことだ
It's OK for him to come.
彼が来るのはかまわない
It's one week to Christmas.
クリスマスまであと１週間だ
It's only (right and) proper that ....
…が正しい，正当である
It's only a few minutes' run.
走っていけばわずか２，３分の所です
