在底面为直角梯形的四棱锥S-ABCD中，∠ABC=90，SA⊥平面ABCD

依照例句,写一句有一定寓意的句子例：一条鱼用来吃喝和呼吸的水量不过一盆水,然而,只有一盆水则不能把一条鱼养大. If you have trouble falling asleep,some people suggest breathing very slowly and very deeply.翻译句子 Have very good memories and can easiy learn quaite long poems by 古今文人描写春节的童谣 古今文人描写春节的童谣,诗以及各地春节的习俗有哪些?各地春节的习俗有哪些?急!急!急!急!急! The work has advanced been finished last week.请问这里的advanced可以这么用吗?如果不能,能否有更好的用法呢? five （nine) of the work has been finished. She has finished the work earlier than (it has been ) expected.这个句子是状语从句省略吧?那我可不可以说She has finished the work earlier than has been expected.还是一定要it has been都省略?There were many more people who got 仿照例句,按要求写句子!1.荷兰,是水之国,花之国,也是牧场之国.（用带点的词语造句）· ··2.在天堂般的绿色草原上,白色的绵羊,悠然自得.（照样子,用比喻的修辞手法写句子） the work has been __ finished.为什么要填nearly?而不填almost?谢谢. 仿照例句写句子例：1.正确的要支持,错误的要反对.2.在生活道路上遇到困难,只有前进,不能后退,.3.失败是成功之母.4.知识的获得要付出艰辛的劳动,它是一件困难的事情,不是那么容易.请再写 Most of the work has been finished,and the rest ____ next week.A.was to be done\x05B.will do C.is to be done\x05D.are done why? 仿照例句,补写句子例句：事业说：人生就是建筑历史的一块砖石.友谊说：人生就是帮助别人攀登的阶梯.补句：奋斗说：人生就是__________________.勤劳说：人生就是__________________.困难说：人 仿照例句写句子 ：我们的干部.我们的干部要关心每一个战士,一切革命队伍的人都要互相关心,互相爱护, 英语翻译原文是Does she speak English?No,but she laughs in English.“用英语笑”这个翻译好难以理解，难道还有汉语笑？ She laughs in English. 英语翻译Groove Coverage的she的歌词+中文翻译.格式最好是左右中英文对照哈. have been done 这个是什么时态的结构 have been是什么时态?请问各位大侠 Have you been in this lab before?这句话是过去完成时吗?我在一本语法书上看到过去完成时是had+过去分词.怎么不一样啊.小的是英语初学者 还不是很明白,求高人指 have /has been doing 是什么时态如题,它和have done 有什么区别吗?谢谢各位.（不太急） have been +过去分词是什么时态?这是什么时态?请说明还有have been+过去式又是什么时态?请讲明 have/has/had加been是什么时态 帮总结一下有关leave和give的词组xiexie she,这首歌歌词的中文翻译SheShe hangs out every day near by the beach Havin’ a harnican fallin’ asleep She looks so ***y when she’s walking the sand Nobody ever put a ring on her hand Swim to the oceanshore fish in the sea She is the 英语翻译She-Groove CoverageShe hangs out every day near by the beachHavin' a HEINEKEN fallin' asleepShe looks so sexy when she's walking the sandNobody ever put a ring on her handSwim to the oceanshore fish in the seaShe is the story the story is 《SHE》的中文翻译歌曲《SHE》是groove coverage唱地～～～～～～～～～～～ 求“SHE”的歌词和中文翻译 初中英语词组初三的人教版新课标的所有英语词组 give－up与give－up－on两个词组之间的区别 词组give up 的大致含义 give it up 短语中it的位置像take it down 中it都在中间的是不是所有短语,it都在它们中间,有没有特例啊? give up 的用法?