`I haven't heard form my good friend ann since she went to Russia.怎么翻译?

i haven't heard from her for a long time什么时态?haven't heard 换成didn't hear、don't hear或者am not hearing 为什么? I haven't heard from him last week.I haven't heard from him _____ last week.(A)since (B) for (C)ago (D)before I haven't heard him for a long time (问号处填介词或副词 句型转换:I haven't heard from him for a long time. I haven't heard from you for quite some time now.为什么后面要加个now呢? I haven't heard news from him for years.单句改错. 改错I haven't heard a letter from my penfriend for a few months. I()for six month A,have receievd Jonh's letterB,have heard from JONHc,haven't heard from JONH. I haven't heard from Kelly for a long time .(同义句转换)I ----------from Kelly for a long time. i haven't heard from her for a long time什么时态?haven't heard 换成didn't heard可以吗/用don't hear或者am not hearing 为什么? heard of 与 heard from 区别I haven't heard _____ her for a long time.用什么为什么不用of呢 他们到底是什么意思 haven't heard from my uncle for years. I haven't heard from you for a while...I hope you are doing well!Take care I haven't ______you for a long time?怎么填?I haven't ______you for a long timeA.hear of B.hear from C.heard of D.heard from选哪一个呢?为什么?是关于什么语法的知识? i( ) from him since he leftA didn't receiveB haven't gotC haven't heard为什么? His letter was especially welcome as I ____ from him for long.3QA.haven’t heard B.would not heard C.hadn’t heard D.didn’t heard I haven’t heard from Maria_____.A.since a long time B for many months 这个怎么选,为什么 --I haven't heard from Jane for a long time .-----What ____ to her?A was happening B has happened