l have been a friend with Li Ming 为什么有be动词我明白been 是be动词.我知道什么是be动词.但是我对be动词的该何时用不太清楚.可以引用此句子帮我解释一下为何这里要有be动词的存在吗?或者有其他

l have been a friend with Li Ming since we went to primary school .里面这个have been 是什么语态? a,l,friend,have连词成句 l have been give you a promise l have a new friend _______(call)Tommy. Over time l have been changed a lot. l have been looking for someone for a long time I have been to Beijing with a friend of China 和 a friend from China 哪个对 For all the days that l have been lonelyFor all the days that i have been lonely,for all the times that l have felt blue ,for all the times ineeded a shoulder to learn on .Thanks for being there as a friend so true.Happy Tanksging.You are the joy of he is so -------(friend).we have been ------(friend ) for2 years. have you a friend? “You have (always) been a good friend.”的中文意思是什么? How long have you been in hongkong?l have been here for a week.have you visited Disneyland? 英语翻译my friend,Alice works at a bank.One moring l went to see her.l thought maybe she had time to have lunch with me.When l got to the bank,l was told she had just been out for a few m___ .l asked them if she would be back by 11：30,and they 英语翻译my friend,Alice works at a bank.One moring l went to see her.l thought maybe she had time to have lunch with me.When l got to the bank,l was told she had just been out for a few m___ .l asked them if she would be back by 11：30,and they MY FRIEND l HAVE A GOOD PEN FRIEND .LET ME TELL YOU SOMETHING ABOUT HIM请翻译 where.have.you.been.these.days?I.have.where.have.you.been.these.days?I.have.been.to.Bei.Daihe.with.a.friend..a,inChinese.b.of.japanc.of.American s.d.form.Canada单项选择 I have been all,的意思.I have been all,的意思.还有,When I was a friend not to say thank you., 连词成句 friend l a have new in five class