重点讲解：
1. be not prepared for/to do sth.
没有准备好；
eg. I'm not prepared to give an opinion.
我没准备要发表意见95BMe@y2ZumbXrc2,。
eg. I was not prepared for all the problems it caused.
我对这事引起的诸多麻烦毫无准备wv&n*WaBq8O0。
2. or else
否则，要不然；
eg. Hurry up or else you'll be late.
快，否则你就要来不及了bIR]E,zOj6u-PBM~Wi(p。
eg. Stop smoking now, or else your health will be ruined.
别再抽烟了，否则你会毁了自己的健康Qurk+!%TpYZM(7Cc3%a。