sth.need prepared sth.need be prepared sth.need to be prepar

sth.need prepared sth.need be prepared sth.need to be prepar What does need to be prepared barbecue ? sth need to be done的意思 sth need to be changed中文是什么意思 need sth to do sth need sth与need to do sth need sth to do 例如：want to do sth.need doing sth.be surprised at doing sth.之 need sth中的need 请问有没有need to be doing sth这种用法 need sth to do sth 咋造句? 急求初中英语语法知识总结.　　例：need doing sth be supposed to do sth