已知抛物线如果抛物线与x轴想交于点A,B与y轴交于点C且三角形ABC的面积为2

having been done为什么不能做谓语呢been是be 的过去分词，done是do的过去分词，但都还是动词啊，所以我觉得可以做谓语。谁能解释的具体点呢 关于done和having been done在非谓语中的区别不是说“done是过去分词,having been done是现在分词完成时的被动语态.两个都可以表示“完成 ＋被动.”但在非谓语中,一般根据就简的原则,使用过去分词 非谓语动词having been done,to have been done什么时候用?举一些例子. 英语非谓语动词中有having been done,那有没having done形式? a point you got the got your point 那是态为什么要用过去式呢 什么叫get a man 求助哲学方面的书籍.最好是读了之后让人感觉心特别能看开 什么事都能迎刃而解 不钻牛角尖 请大家推荐几本哲学方面的书籍 推荐哲学方面的书籍 have been done 与 having been done 与have been doing与having been doing有什么区别请举例句说明 having been done have been done have been doing 区别?就是have 和having 还有done和doing 都怎么用的如题 请说的直白一些 最好有点例子什么的 万谢 可不可以帮忙取个谐音的英文名,中文名叫雅洁,天蝎座, 求一些关于哲学的书接下来高一,想看一些哲学方面的书.（不要《苏菲的世界》和罗素的《西方哲学史》）最好是能有一些书有讲解一些哲学名词和哲学思想的.不要太简单了,最好能引发深思 求推荐几本哲学方面的书,是不是非得读马克思,黑格尔?尼采怎样? 好词好句5个 豪夫童话的好词句有哪些?好词18个好句5个 5个好句要有好词 Finally,the old man gets his hats() Finally,the young man ________ (成功) in getting the job. The old man is seventy.对划线部分提问,画线部分为seventy. This story is well worth ______.A to read B being read C to be reading D reading This idea sounds quite _____.(well) this is my idea this is____ i_______this is my idea 改同义句this is____ i_______ 英语根据短文内容,回答下列问题One evening,after work,I got on a train,found a seat and sat down.A man was next to me.He was reading a book.I had nothing to do,so I read the same book with the man.I read a page and sat back,waiting for hi 英语短文 根据下列短文内容,回答下列问题Tom comes from canada.now he is learning chinese in beijing.in the morning he goes to school by bike(骑自行车）.He and his friends have lunch at school.In the afternoon he has three lessons 请问世界上最著名钢琴家是谁?他是哪里人? 有没有古诗,词什么的形容等到花儿都谢了这个意思的?其实我是想写一封邮件,比如一首诗什么的,以告诉我的朋友,答应我去做的事还不去做,我等得久了, 英语翻译 The book is not worth reading .同义句The book _ _ _ . this man is nice ,I like to be with him.TO BE 到底什么情况下要使用to be?我觉得直接说I like with him就可以了呀 但为什么这样不对呢?