had been,has been,has,had 后面加过去分词都是怎么用的?【以及和was,is有什么区别?】

英语,has been和 had been have been / has been / had been 的区别 has been / have been /had been ………… His sister left home in 1998,and ＿ since.A.had not been heard of B.has not been heard of C.ha had been 和 has/have been的区别是什么? 初中英语语法has been和had been的区别 has been done,had been done 的区别是什么? have/has/had加been是什么时态 had been 关于had has等英语语法has been V+ing和had been V+ing的区别. has been has been ,had been,have been的区别,以及使用方法是什么 has been ,had been,have been的区别,以及使用方法是什么 47.She ______ up for two hours.A.has got B.has been C.has been got D.had been 英语7.The police found that the house ________ and a lot of things _______.7.The police found that the house ________ and a lot of things _______.a.has broken into;has been stolen b.had broken into;had been stolen c.has been broken into;stolen d.ha By 2011 the library_____.A.would been built B.had been built C.has been built D.have been built Tom got sick last May and has been in bed since then.为什么has been 而不是had been Miss White said she _ some beautiful coats in the shop .A.had been show B.has been shownc.had been shown to D.had been shown