皮卡丘几级进化好:-I'd better ring off. There's someone at the door

-I'd better ring off. There's someone at the door I think we'd better split the difference. You'd better 关于 You'd better you'd better to do / you'd better do 有什么区别哇？ 是you 'd better not do 还是you 'd better not to do We've three rooms to decorate altogether.I think we'd better ————the living-room. I'll ring you at once when I reach Beijing.(同义转换) you'd better have the colour TV set------- you'd better watch yourself. 的意思