should better后面加什么

　　It's bad enough to have anyone joke about such a serious matter but a member of the police force should know better.

　　拿这么严肃的事情开玩笑已经够糟的了，身为一名警察更不应该这样做。

　　The reforms should give a better chance to the less able children.

　　这些改革将会给予能力较低的儿童更好的机会。

　　Rightly or wrongly, they felt they should have been better informed.

　　不论对错，他们觉得应该让他们了解到更多的情况。

　　I should have got a better price for the car, but I'm not much of a businessman.

　　那辆车我本应卖个更好的价钱，但我不大会做生意。

　　After therefore should better place long the movement time.

　　因此最好把运动时间放在长后。