経てば

もう１０年経てばその町は変っているだろう。

The town will change in another ten years.

外国へ行って１ヶ月も経たぬうちに、彼は病気になった。

He had not been abroad for one month before he was taken ill.

そんなんじゃいつまで経っても奨励賞止まりだぞ？

With that sort of attitude you'll never get past the honourable-mention prizes.