关于has been和have been用法的For hundreds of years,ST.Bernard dogs have been saved lives of travellers crossing the dangerous Pass.请问这个句子的意思是“几百年来,圣伯纳德修道院驯养的狗拯救了许多翻越这道险要

have been 和 has been的区别 has been和have been区别 have been away 和 has/have left 关于时态的问题have beenhave been 和have had been有什么区别?原句是这样的：I've heard has been good.有have也有has had been 和 has/have been的区别是什么? 请问have been 和has been有什么区别 Though learning gymnastic has been more difficult 这里的has been 是什么用法不是只有 have been dong 和has been done吗?这里的has been 是什么? have been to,has been to ,have been in ,与have gone to,has gone to 的区别和用法. 英语中have been；has been是什么? has been doing have been done区别 has been have been的区别 have been 和has和has 在什么时候用呀 have been / has been / had been 的区别 has been / have been /had been ………… have,has,have been,has been在什么情况下用啊? 关于have/ has/ been to sp/的句子关于have/ has/ been to sp/的句子3句 there have aways been people 正确么?there have aways been people 和there has aways been people哪个正确? have since been 和 have been since