I have rarely seen such a beautiful sunset

I have rarely seen such a beautiful sunset Is this film moving?Yes,it is___.A．Rarely have I seen this before.B．Rarely before have I seen this.C．Rarely have I seen before this.D．Rarely I have seen this before.为什么?请分析一下句型.如果倒回来,陈述语气应该是什么 i have seen it Oh,I have seen It‘s .（unusual ）film I have ever seen. It's the first time that I have seen this kind of flower.最重要的是那个“I have seen”, Such creatures have rarely been seen alive by man 这句话的结构是什么 T‘have seen what I have seen,see what I Deceived all i have seen Since I have seen you I HAVE NEVER SEEN 歌词 I HAVE NOT SEEN YOU , Such creatures have rarely been seen alive by man as they live at a depth ofalive为什么放在seen后面?Such creatures alive have rarely been seen by man.不是更顺吗? Jim,have you seen my dictionary?Yes,I have.I ----it on Lily's desk five minutes ago.A.have seen B.saw C,seeing D.see It's the second time I ( )this filmA.had seen B.see C.saw D.have seen I have rarely seen a more interrsting film.哪个是助动词 修饰语 实义动词 ,请一一列举出来!再给一个有名师的网站 就给回答那种! They have lived here s ______ he moved to this city.I have e______ seen this film twice,but I haven’t seen that y _____. Here's a really good time,the b___one i have seen this year.