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I know thene is something in wake of smile. practice make perfect是什么意思 Practice makes perfect 请问make为什么要加s? practice makes perfect 为什么make要加“s” practice 这里是名词,而perfect是副词,修饰make是吗? 山东省郓城县张营镇振兴街北段928号用英语怎么说 I am Chinese boy.chinese为什么不能用china代替 贵州省习水县温水镇目里村用英语怎么说 英语翻译RT用在线翻译的不对... 广东省惠州市惠东县平山镇 用英语怎么说 what is fish?where is it comg fromwho can tell me 老师让我们用Who Where What When提问 用the fish shop.buy some fish.A fter supper .book ston.buy some boors .this Saturday .the libary.read boors.this sunday.the cinema.see a film.at 9：00 答.包含人物mother brother sister father .Who Whe 【求助/交流】有没有人帮我解释一下什么是基因的保守性 同源性很低的基因如何扩增?我想扩增细菌中的一段功能基因,但是这个基因在各细菌中的保守性很低.我想知道该怎么设计引物去扩?但是保守性很低,设计简并引物都很困难,即使扩增出来之后B she is dead .怎么理解这里的 is Let's____(have) a rest.shall we?答案是have要我说,哪个shall是表示语气委婉,还是表示过去?为什么不填had? Let's have a rest ,shall we?同义句______ ______ having a rest Let's have a rest,（ ） A.will you?B.shall we? let's have a rest,_____?A.will you.B.shall we C.won't you D.dong't you so do I和so I do的不同 为什么“I think I do not should have done so"为什么“I do not think I should have done so"的翻译为”我不认为我应该这样做“?should have done so=本来应该做的事情却没有做,”我不认为我应该做这件事却没有 henry killed the dog,i asked him --- A .HE DID THAT B.HE HAS DONE SO so I did ,与so did I的区别 I've done so与I've done it是不是一个意思? i known there is something in your eyes是谁唱的啊? There is sadness in your eyes是什么歌曲中的? there's something wrong with your eyes.(加入yesterday变同义句)（ ）（ ）wrong（ ）your eyes. much is said about the flying speed of the peregrine falcon,and many claims have been made,ranging from 125mph to more than double that.开头这个much, Plenty has been said about the content of his outburst, but not as much on the speed and thoroughness with which the news spread. 这句话中的with是什么用法?还有分析一下整个句子的结构,谢谢了 谁有because i said so这一首歌曲? i said so Because I Said So 英语好词好句,平常些的,名言不要,OK?寒假了,英语的作业,各位哥哥姐姐帮帮忙!先谢谢了!