had better
would find it wiser or more suitable to最好是
You'd better have that tooth pulled out．你最好把那颗牙拔掉。
You had better not go by air．你最好不要坐飞机去。
You had better finish today's assignment，for tomorrow we'll have other things to do．你最好把今天的任务完成，因为明天还有明天的事。