中国空军何时赶上美国

英语翻译然变也尝为吏中的为是什么意思? 怎样提高语速 在"He is said to have studied ehglish . 帮我翻译下这句英文,：exert to find the target 汉语拼音er,或者说儿,二,耳,这些音怎么用国际音标来表示呀? “背景”的英文怎么说? He is listening to a CD.中listening是什么词性?Do you want to join me for dinner?中for是什么词性?kuai 他据说很富有是he is said to be rich还是he is said rich?包括据说有一棵树是There is said to be a tree还是There is said a tree 你需要多锻炼 用英语 仿写星星变奏曲中的谁愿意...谁愿意...（急需）原创的哦 英语翻译"Daydreaming again,Barb?You'll never amount to anything if you spend your time that way!Can't you find something useful to do?" Many youngsters have heard words like those from their parents.And until recently this hostile attitude toward 求英语高手翻译：两年前的今天,两年后的现在.因为我们快两年了, 咋回答can you keep an eye on my bag Can you keep an eye （） my bag?） he couldn't explain the_____of ten years in his job history选什么?he couldn't explain the_____of ten years in his job historyA.gap B.interruption C.blank D.opening选哪一个?为什么?谢谢! since能与ago连用吗 ago可以与用现在完成时连用吗? matlab书中一个简单的画圆的代码看不懂,RT,书中较为完整的步骤是这样的：圆心角的采样设置：theta=linspace(0,2*2pi,50);半径长度的采样点设置：r=0.5:0.25:1.75;x=1+cos(theta)`*r;y=2+sin(theta)`*r;关于x和y的 凯尔康英语怎么说 凯尔英语怎么写怎么读? 英语虚拟语气选择题时态问题you look so tired ,it is time you__A go to sleepB went to sleepC go to bed D went to bed这只可以用过去时么?if she could sew，__A she make a dress B she would have made a shirtC she will make a shirtD s 一件华丽的有品位的衣服 用英语怎么说? 质量最差的服装用英语怎么说? what people wear d_____ on their likes and dislikes.因为已经有谓语动词wear,这里可不可以填depending?为什么? what people wear depends on their likes and dislikes 这句话的意思是? what people wear depends on their likes and dislikes 句中depend为什么要加s What the people there wear depends on their likes and dislikes.中为什么depend要加S 根据汉语意思,完成下列句子 What people wear（ ）（ ）（取决于）their likes and d根据汉语意思,完成下列句子1.What people wear（ ）（ ）（取决于）their likes and dislikes2.（ ）（通常说） ,people in Canada since 引导的现在完成时态句子.资料：若since引导的状语从句的谓语为 持续性动词 的现在完成时,则表示动作和状态延续到现在（说话时刻）,其表示的时间的起点应从动作发生之时算起.例如 è stato letto il giorno意大利语 Una mela al giorno leva il medico di torno.意大利语吧 英语写作题.假如10月9日是你妈妈的生日,请你用英语写一段70词左右的话语.向亲爱的妈妈说出心里话.叙述一些小事来体现妈妈对你的关心和帮助.表达对妈妈的祝福：祝妈妈健康、快乐.