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回答：级别：大四 12:57:01来自：天星教育网
in which, for which, on which, at which的不同用法
　　1)这些都是定语从句里面，由which引导的定语从句，介词提前。下面这些介词的使用除了意思上的区别，具体是要以which引导的从句而定的。
　　①in which可以翻译成在……里面
　　The school (that/which) he once studied in is very famous.
　　= The school in which he once studied is very famous.
　　②for which可以翻译成为了……目的
　　Tomorrow I will bring here a magazine (that/which) you asked for.
　　= Tomorrow I will bring here a magazine for which you asked.
　　③on which可以翻译成在……的上面，或具体时间的某一天
　　I have a dresser in my bedroom, which there are many cosmetics on.
　　= I have a dresser in my bedroom on which there are many cosmetics.
　　④at which可以翻译成在……里面或在……
　　The dumpling House which he often has dumplings at is very popular.
　　= The dumpling House is very popular, at which he often has dumplings.
　　2)当然第一点只是介词作为基本意思的用法，还有一些固定搭配，得具体情况具体分析。
　　①The plane may be several hours late, in which case there’s no point in our waiting.
　　(固定搭配：in the case)
　　②The speaker paused to examine his notes, at which point a loud crash was heard.
　　(固定搭配：at the point)
　　③Ten years of hard work changed her greatly, for which reason he could hardly recognize her at first sight.
　　(固定搭配：for the reason)
　　④The film at which I fell asleep was very boring.
　　(Here &at which& is based on &fell asleep at the film&因为电影无聊而睡觉。)
　　⑤The little creature in which scientists are interested is known as ET.
　　(这里&be interested in&是词组原因)
　　⑥This is the book for which he is looking.
　　(即等于This is the book which he is looking for，这主要是因为look for 这一短语)
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be in 报错 执政；在家；到达；在…里面网络释义专业释义在家初中英语总复习之短语：[星光教育论坛] ...be injured 受伤 be in 在家 be in trouble遇到麻烦 ...基于84个网页-相关网页到达到达(be in),此释义来源于网络辞典.基于56个网页- 相关网页 处在另四瑞兽 爰居 ...坐 [have a seat]处在,处于 [be in a certain position]积储 [store up] ...基于29个网页- 相关网页 在于温在_天一轩起名网 ...居于,处于 [be on]在于;决定于 [be in]省视;观察 [inspect] ...基于23个网页- 相关网页 短语be fortunate in幸运；有好运气；荣幸；庆幸be rich in富于；有大量的；盛产；富含be engaged in忙于；参与；从事；从事于be buried in沉思；被埋葬在；埋头于；全神贯注于be born in出生于；出生在；诞生于；源于be caught in遇到；被困在；陷入；淋雨be absorbed in专心于be skilled in擅长；精于；精通；善于be made in在某地制造；生产或制造；在；由制造更多收起网络短语 专业:体育正在攻球,打球：·以上统计来源于2,447,534篇论文数据,部分数据来源于NoteExpress21世纪大英汉词典be in1.在恰当的位置：The nail is in.钉子钉进去了.2.在屋里；在家；在工作处：Mother is not in.妈妈不在家.3.抵达,到达；收到,接过：The train will be in any minute now.现在任何时候火车都可能进站.The total figures are not in.还没收到所有数据.4.时髦,流行：Short skirts will be in this summer.今夏短裙会流行.5.收获(庄稼),收割入仓,收进(尤指可以出售)：The fruit crop was now in.水果现已收进来了.6.上市：The apples are not in yet.苹果还没上市.7.当选；掌权执政,当政,在职；得到议席：The Democrats have been in since the hand-over of power.自从权力移交后,民主党人一直当政.8.(海)涨(潮)：Be careful about swimming when the tide's in.涨潮时游泳要多加小心.9.(火)在燃烧：We hope the fire's still in when we get up in the morning.我们希望我们早晨起床时,炉火还是燃着的.10.【板球】正在攻球,打球：The two best batsmen are in at the moment.两个最佳击球手正在攻球.11.存在于(某时、某地)：The old letters are in the bottom drawer.旧信件在最下面一个抽屉里.12.从事,参与,参加(某职业活动)：I'm in law,he's in painting.我的职业是法律,他的职业是绘画.13.处于(某状态、情况)：Their plan has been in action for a year now.他们的计划已实施一年了.同近义词执政；在家；到达；在…里面strike,attain双语例句原声例句权威例句But do you know what trends should be in your closet?但你是否知道应该出现在你的衣柜里的流行趋势?article.yeeyan.orgWith convergence to an ideal state,you can expect the system to be in or near that ideal state.通过收敛到一种理想状态,您可以期望系统处于或接近那一理想状态.But the debate ought to be in that framework and not "Do we want to end the war?但这场争论理应在那个框架之下进行,而不是“我们是否想要结束战争?
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　　介词 知识讲解 请问in和into有什么区别？on和onto呢？
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