It's the trouble with young people today.
それが今の若い人の問題だ（◆名詞の直後に置く）
It's the unbearable heat.
やりきれない暑さだ
It's thought he may have fallen.
彼は転倒したのかもしれないと考えられている
It's time to go back to work.
仕事に戻る時間だ
It's time to move on to the next step.
次の段階に進む時が来た
It's time to slow down a little.
少しゆっくりする時期だ
It's time you put the past behind you.
もう過去のことは忘れろよ
It's too early [late] in the day to stop it.
止めるには早すぎる［手遅れだ］
It's too early to say ....
…というのは時期尚早だ
It's too hard. No way can you do it.
難しすぎて出来るわけがない
