1、好主意的英语：Good idea，英 [ɡ?d a??d??] 美 [ɡ?d a??di??]。
2、亲爱的，我不认为那是个好主意。Honey, I dont really think thats a good idea。
3、我们出发之前打个电话是个好主意。It would be a good idea to call before we leave。