xray作业指导书

I have\hadHave\had you finished homework?finished homework.(我完成了作业)改为一般疑问句如果你改的是Have\had you finished homework?为什么一般疑问句不是只有疑问词特殊情况下是过去式,那为什么finished要是 暑假里的趣事200字 “牛皮癣科室”用英语怎么翻译, 谁告诉我暑假趣事的作文提纲200字? 请问空间直角坐标系中,已知两条平行直线的方程,如何求出两直线的距离?可以不可以类比 平面直角坐标系?就是|常数项之差|/根号（a^2+b^2+c^2) 在直角坐标系xoy中,点A的坐标为（1,√3）,求角Aox的角平分线所在直线的方程. 在直角坐标系xOy中,已知△AOB三边所在的直线的方程分别为x=0,y=0,2x+3y=30,则△AOB内部和边上整点的总数为多少? 在直角坐标系xoy中,点A的坐标为（1,根号3）,求角∠AOx的角平分线所在直线的方程 I (have finished) my homework now.选择题I _______ my homework now.A.finishB.finishedC.have finishedD.had finished正确答案C为什么?B为什么不对?now在这里应该用什么时态啊? I have finished my homework now这句话语法分析I have finished my homework now 这句话不是现在完成时,因为有now的出现,而且finish不是可持续性的动做,我这么说对吗?那这句话的时态是一般现代时吗?其中have 平面直角坐标系中有点（3,4）,以点A为圆心,5为R画圆,在同一坐标系中,直线y=-x与圆A的位置关系是帮我说清楚点.最好有图, Don't fall ____,Tom.What's the matter(sleep) Fall,just fall,don't be afride. 116.Long time no see!好久不见!117.No pain,no gain． 不劳无获.118.Well,it depends.噢,这得看情况.119.We're all for it． 我们全都同意.120.What a good deal!真便宜!121.What should I do?我该怎么办?122.You asked for it!你自 I have finished my homework for two hours/I have joined the army since 2005/I have arrived in London for two days.哪里错了,请告知, i finished my homework two hours ago.=i ( ) ( )my homework ( )two hoursfinish是不延续性动词，能这样表达吗？ 用how long对i finished my homework two hours ago中的two hours ago提问 LIght music can help us fall _____ quickly.(sleep) The light music made me fall ________(sleep)quickly. I was so exciting that I couldn't fall____________(sleep)求解答还有：一 I lice on the ___________(twelve)floor of the building.二 The teacher told us that the earth _______(go)around the sun all the time.三 four()____ Russia()_____ draw()___ I __my homework ,mom?Really?When did you finish it?A finished B have finished C had finished请给出原因 还有,请问finish 是延续性动词还是非延续性动词,有完成时吗? when i have finished it.疑问这是是什么时态? How much did you ____for the new cell phone?A pay b spend C cost d take 请附带原因 How much did you( ) the mobile phone?A,cost B,spent C,pay,for D,take写出原因 I don't belive you.she told him that___.I think you are lying.she said that___. whoever told you -----was lying.为什么填that 而不填which? ____ told you that was lying.[A]who [B]whoever并说明原因谢谢 Those who told you that were lying.Whoever told you that was lying.两句话都对吗? 文言文《晋书 谢鲲传》翻译求大神帮助 文言文《晋书．恒伊传》的译文 英语翻译余众弃甲宵遁,闻风声鹤唳,皆以为王师已至,草行露宿,重以饥冻,死者十七八 《晋书 王浑传》文言文翻译