I have been down for two hours.句型转换 I have been down ---- ---- ----.

I have been down for two hours.句型转换 I have been down ---- ---- ----. I have been down for two hours.改为同义句I have been down ( )( )（ ）two hours. You know me,I've never been down for long. I have been waiting for you I have been looking for a man. I have been working for two days. I have been ()teapots for fifteen years nail down在这里的意思i have been trying to nail down this interview for weeks.这句话中的nail down用迫使某人做出打算好像行不通,请高手回答nail down 在这里的用法,谢谢. i have neve been late for work为什么用been down 与have been down的区别 I have been asked to have the tree cut down.和I have been asked to cut down the tree.有什么区别么? i have been waiting for you请问have been 怎么不have be或者直接 i have waiting for you I have been (i ) in keeping fish for two years I remember,I have been waiting for you. I have already been here for 5years =I have been here_____5 years______ i have been there 3 years ago 还是i have been there for 3 years ago I have been playing piano for ten years.同义句I have been playing piano____ten years____ 请问i've been down