GENIE 英会話もったいないと言うのは・・・？？？
In English we have the same expression. It`s…
What a waste!!
Also…「It`s a waste of なんとか」をよく使います。 For example…
It`s a waste of money. (お金の無駄ってことです。)
Here are some more examples…
It`s a waste of time. Or…
It`s a waste of energy…effort…space…などなど・・・
Well, I hope that reading this blog hasn`t been a waste of your time ね？！ このブログを読むのは時間の無駄になってないよね？ (^_-)
Enjoying yourself is never a waste of time so why don`t you come to GENIE and enjoy a free trial lesson and Enjoy English with me someday soon!! よろしく！