It would be a good idea to call before we leave.
我们出发之前打个电话是个好主意。
Our results should be a good approximation to the true state of affairs.
我们的结果应该和实际情况相当接近。
He would be a good father to my children.
对我的孩子们来说，他会是个好父亲。
It might be a good idea to tell your husband.
告诉你的丈夫不失为上策。
It may also be a good move to suggest she talks things over
建议她把事情谈开了也许是不错的做法。