you'd better do 这个'd是啥的缩写?

you'd better do 这个'd是啥的缩写? You'd better +do 还是 to do? you‘d better do的意思是什么? you'd better _(do) more exercise YOU’D BETTER DO IT NOW请问这个‘D是 WOULD 还是 HAD You'd better do sth.中You'd 全称是什么 you'd better not do还是You'd better not to do You'd better do You'd better not do .是这样吗. 是you 'd better not do 还是you 'd better not to do 提问句型 是You'd better do sth还是You'd better to do sth 【英语】用这个短语造5句话you‘d better to do sth..写错了，是you’d better do sth... you'd better do something 这里的'd是不是had? you'd better do sth.那个'd为什么不是would you'd better do something 中的d是不是had? you'd better do something 中的d是不是had? you`d better to do sth究竟是you'd better to do sth还是you'd better do sth,为什么! you'd better not do it..能说成you'd better don't do it.或者you'd better do not it.为什么? 英语翻译you'd better ( ) ( ) ( ).