Decide 是决定的意思,而decided是已经决定了的意思,区别可以从以下例子看出:
He has decided to participate this game coming, now you need to decide what to do, then tell me by tonight. 他已经决定参加这场即将到来的比赛,现在你需要决定做什么,然后在今晚之前告诉我。
拔智齿技巧
水利万物而不争,
而万物莫能与之争。