expression
see, I told you so; well, look at that
Used when someone ignores your advice and then fails; carries a tone of 'I told you so' or 'see what happened'. Often said with a sense of vindication or mild reproach.
だから言ったのに。それ見ろ、やっぱり失敗したじゃないか。
I told you so. See, you ended up failing after all, didn't you?
それ見ろ、傘を持って行けって言ったのに、濡れちゃっただろう。
See? I told you to take an umbrella, and now you're all wet.