Would rather / Had rather 宁愿，宁可
Would you like to go to the bar tonight?
你今晚想去酒吧吗？
I'd rather stay at home (I would rather stayat home / I had rather stayat home)
我宁愿待在家里。

Rather than 而不是
Rather than making things morecomplicated, we should just let Hasi deal with it.
我们应该让哈斯来处理这件事，而不是把事情越弄越复杂。

Had better 最好......
We had better leave early if we don't want to get stuck intraffic.
我们最好早点出发，如果我们不想遇上堵车的话。