選修八unit3(求英語選修八點(diǎn)Unit3大課文的詳細(xì)講解)
1.求英語選修八點(diǎn)Unit3大課文的詳細(xì)講解
Unit3 ALEXANDER GRAHAM BELL 亞歷山大·格雷厄姆·貝爾 Alexander Graham Bell was born in 1847 in Scotland, but when he was young his family moved to Boston, USA. 亞歷山大·格雷厄姆·貝爾 1847 年出生于蘇格蘭。
但在他還小的時(shí)候，他家就搬到了美國 的波士頓。 His mother was almost entirely deaf, so Alexander became interested in helping deaf people communicate and in deaf education. 他的母親幾乎全聾了，因此他有志于幫助聾人交流，并從事聾人教育事業(yè)。
This interest led him to invent the microphone. 這一愛好促使他發(fā)明了麥克風(fēng)。 He found that by pressing his lips against his mother's forehead, he could make his mother understand what he was saying. 他發(fā)現(xiàn)他把嘴唇放在母親的額頭上， 并以一定的方式來移動(dòng)額骨， 就可以使她聽懂他所說的 話。
He believed that one should always be curious and his most famous saying was： 他認(rèn)為一個(gè)人應(yīng)該總是有好奇心理。他最有名的一句話是： "Leave the beaten track occasionally and dive into the woods. 偶爾離開平路去尋求困境。
Every time you do you will be certain to find something that you have never seen before. 每次當(dāng)你這樣做的時(shí)候，你一定會(huì)發(fā)現(xiàn)你從未見過的東西。 Follow it up, explore all around it, and before you know it, you will have something worth thinking about to occupy your mind. 跟蹤下去，不斷探索，不知不覺中，你就會(huì)發(fā)現(xiàn)某種值得思考的東西盤踞著你的頭腦。
All really big discoveries are the result of thought." 所有真正偉大的發(fā)現(xiàn)都是思考的結(jié)果。 It was this exploring around problems and his dynamic spirit that led to his most famous invention - the telephone in 1876. 正是這種對問題的探索和富有活力的精神造就了他那最著名的發(fā)明——1876 年的電話。
Bell never set out to invent the telephone and what he was trying to design was a multiple telegraph. 貝爾并非一開始就想要發(fā)明電話的，他本來想設(shè)計(jì)的東西是多路電報(bào)。 This original telegraph sent a message over distances using Morse code (a series of dots tapped out along a wire in a particular order). 這種原始的電報(bào)是在一段距離中用莫爾斯電碼傳遞信息 （莫爾斯電碼是通過電線發(fā)出的以特 定的次序敲擊出的一連串點(diǎn)劃） ， But only one message could go at a time. 但是這樣只能一次發(fā)一個(gè)信息。
Bell wanted to improve it so that it could send several messages at the same time. 貝爾想改進(jìn)電報(bào)通訊方式，以便同時(shí)能發(fā)出好幾個(gè)信息。 He designed a machine that would separate different sound waves and allow different conversations to be held at the same time. 他設(shè)計(jì)了一種機(jī)器，以使聲波分成不同的音調(diào)，從而有可能在同一時(shí)間里進(jìn)行不同的通話。
But he found the problem difficult to solve.但是他發(fā)現(xiàn)這個(gè)問題很難解決。 One day as he was experimenting with one end of a straw joined to a deaf man's ear drum and the other to a piece of smoked glass， 有一天做實(shí)驗(yàn)， 他把一根干草的一端和一個(gè)聾子的耳鼓膜連接起來， 另一端連接一塊被煙熏 過的玻璃。
2.高二選修8 Unit3的二篇reading 翻譯
ALEXANDER GRAHAM BELL He believed that one should always be curious and his most famous saying was: "Leave the beaten track occasionally and dive into the woods. Every time you do you will be certain to find something that you have never seen before. Follow it up, explore all around it, and before you know it, you will have something worth thinking about to occupy your mind. All really big discoveries are the result of thought." It was this exploring around problems and his dynamic spirit that led to his most famous invention - the telephone in 1876. Bell never set out to invent the telephone and what he was trying to design was a multiple telegraph. This original telegraph sent a message over distances using Morse code (a series of dots tapped out along a wire in a particular order). But only one message could go at a time. Bell wanted to improve it so that it could send several messages at the same time. He designed a machine that would separate different sound waves and allow different conversations to be held at the same time. But he found the problem difficult to solve. One day as he was experimenting with one end of a straw joined to a deaf man's ear drum and the other to a piece of smoked glass, Bell noticed that when he spoke into the ear, the straw drew sound waves on the glass. Suddenly he had a flash of inspiration. If sound waves could be reproduced in a moving electrical current, they could be sent along a wire. In searching to improve the telegraph, Bell had invented the first telephone! Bell was fully aware of the importance of his invention and wrote to his father: "The day is coming when telegraph wires will be laid on to houses just like water or gas – and friends will talk to each other without leaving home." The patent was given in 1876, but it was not until five days later that Bell sent his first telephone message to his assistant Watson. The words have now become famous: "Mr Watson - come here - I want to see you." Alexander Graham Bell was not a man to rest and he interested himself in many other areas of invention. He experimented with helicopter designs and flying machines. While searching for a kite strong enough to carry a man into the air, Bell experimented putting triangles together and discovered the tetrahedron shape. Being very stable, it has proved invaluable in the design of bridges. Bell was an inventor all his life. He made his first invention at eleven and his last at seventy- five. Although he is most often associated with the invention of the telephone, he was indeed a continuing searcher after practical solutions to improve the quality of everybody's life.他相信一個(gè)人應(yīng)該永遠(yuǎn)保持好奇，他最著名的話是：“越雷池一步偶爾和潛水到樹林里去了。
你每一次你將某些找到一些你從未見過的。遵循它，探索周圍，在你知道之前，你會(huì)有一些值得思考來占據(jù)你的思想。
所有真正重大的發(fā)現(xiàn)都是由于思想”。正是這種探索解決問題和他的動(dòng)態(tài)精神導(dǎo)致了他最著名的發(fā)明——在1876年的電話。
貝爾從來沒有打算發(fā)明電話和他試圖設(shè)計(jì)是一種多個(gè)電報(bào)。這一最初的電報(bào)發(fā)送一個(gè)消息傳輸距離使用莫爾斯代碼（一系列的點(diǎn)了沿著一條線在一個(gè)特定的順序）。
但只有一個(gè)消息可以在一個(gè)時(shí)間。貝爾希望改善它，這樣就可以發(fā)送一些消息在同一時(shí)間。
他設(shè)計(jì)了一種機(jī)器，能夠區(qū)分不同聲波，允許不同的談話內(nèi)容是在同一時(shí)間舉行。但他發(fā)現(xiàn)這個(gè)問題很難解決。
一天，他開始嘗試使用一根稻草的一端與一個(gè)失聰?shù)娜说亩ぃ硪粔K煙色玻璃，Bell注意到，當(dāng)他說到耳朵、稻草德魯聲波在玻璃上。突然他有一個(gè)flash的靈感。
如果聲波能復(fù)制在一個(gè)移動(dòng)的電流，他們可以發(fā)送沿著一條線。在尋找改善電報(bào)，貝爾發(fā)明了第一個(gè)電話！貝爾完全意識(shí)到他的發(fā)明的重要性和寫信給他父親說："的日子即將來臨的電報(bào)線路將被放置在到房子就像水或氣體——和朋友會(huì)彼此交談不離開家。”
是1876年授予的專利，但直到5天后，貝爾電話消息發(fā)送了第一向他的助手沃森。這個(gè)詞現(xiàn)在已經(jīng)成為著名的：“華生先生——來這里——我想要見你。”
亞歷山大·格雷厄姆·貝爾是一人休息和他自己感興趣的許多其它領(lǐng)域的發(fā)明。他嘗試用直升機(jī)設(shè)計(jì)和飛行機(jī)器。
在尋找一個(gè)風(fēng)箏強(qiáng)大到足以讓人到空中，貝爾嘗試把三角形在一起，發(fā)現(xiàn)了四面體的形狀。非常穩(wěn)定，它已被證明在設(shè)計(jì)橋梁的無價(jià)。
貝爾是一位發(fā)明家他所有的生活。他讓他的第一個(gè)發(fā)明十一點(diǎn)和他去年在七十五歲。
雖然他常伴隨著電話的發(fā)明，他確實(shí)是一個(gè)實(shí)用的解決方案后，繼續(xù)搜索改善每個(gè)人的生活質(zhì)量 翻譯完畢 如果有幫到您，請采納，點(diǎn)擊【采納為滿意答案】按鈕即可，如果還有問題 請發(fā)帖重新提問哦 謝謝拉#^_^#祝您學(xué)習(xí)愉快。
3.八年級(jí)英語上UNIT3知識(shí)點(diǎn)及語法重點(diǎn)
短語1. babysit one's sister照顧妹妹 2. visit one's grandmother看望奶奶3. spend time with friends和朋友們一起度過時(shí)光 4. visit cousins看望表弟等5. Go to sports camp去運(yùn)動(dòng)野營 6.go to the beach去海灘 7. go camping去野營8. Go shopping去買東 9. go swimming去游泳 10. go boating去劃船 11. go skating去溜冰12. go walking去散步 13. go climbing去登山 14. go dancing去跳舞 15. go hiking 去徒步遠(yuǎn)足16. go sightseeing去觀光 17. go house-hunting去找房子 18.go on a hike徒步旅行，go bike riding騎自行車旅行，go fishing去釣魚 19. do some shopping買東西20. do some washing洗衣服 21. do some cooking作飯 22. do some reading讀書23. do some speaking訓(xùn)練口語 24. do some sewing做縫紉活 25.that sounds nice那好極了26. at home在家 27. how about=what about ……怎么樣？28. how long多長時(shí)間29. how far多遠(yuǎn) 30. how often多長時(shí)間一次 31. how much, how many多少32. have a good time =have fun= have a wonderful time= enjoy oneself 玩得高興，過得愉快 33. show sb. Sth.=show sth. to sb.出示某物給某人看 give me the book=give the book to me給我書，pass me the cup=pass the cup to me把杯子遞給我，sell me the house=sell the house to me把房子賣給我buy me a book =buy a book for me給我買書，make me a cake=make a cake for me給我做蛋糕 34. get back=come back回來 35. rent videos租借影碟 36. take walks=go for a walk散步 37. think about考慮 38. decide on= decide upon決定一個(gè)計(jì)劃 39. something different不同的事情40.a great vacation一個(gè)愉快的假期 41. I can't wait我等不及了42. the famous movie star著名的影星43. an exciting vacation激動(dòng)人心的假期44. Ask her about her plans向她詢問她的計(jì)劃ask sb. about sth.向某人詢問某事 45. forget to do sth.忘記要做某事，forget doing sth.忘記做過某事句型1.What are you doing for vacation? I'm babysitting my sister.假期你要做什么？我要照顧我的妹妹。
2.Who are you going with? I'm going with my parents.你要和誰一起去？我要和父母一起去。3.When is he going camping? He is going on the 12th of February, 2005.4.I'm going to Tibet for a week.我要去西藏一周。
5.What are you doing there? I'm going hiking in the mountains.你在那里要做什么？我要在山區(qū)里遠(yuǎn)足。6.Show me your photos when we get back to school.我們返回學(xué)校時(shí)，你把照片拿給我看。
7.Where are you going for vacation? I'm going to Hawaii for vacation.8.I'm going to Hawaii for vacation in December, and I'm staying for three weeks.9.What is it like there？那里什么樣子？10. Can I ask you some questions about your vacation plans？我可以問你一些有關(guān)你假期計(jì)劃的問題嗎？11. He thought about going to Greece or Spain, but decided on Canada.他考慮去希臘或西班牙，但是最后他決定去加拿大。12. He is leaving the first week in June and staying until September.他將在6月的第一個(gè)星期動(dòng)身，一直呆到9月。
13. Please don't forget to close the door when you leave.你離開時(shí)，請別忘記關(guān)門。14.She couldn't wait to get home to see he parents. 她迫不及待的想回家看望父母。
4.英語八年級(jí)上冊第三單元知識(shí)點(diǎn)歸納、、、
答案是： 第三單元主要講述的是 形容詞的比較級(jí)的用法 比較級(jí)構(gòu)成是： 1.一般情況下在后面直接加上er shorter 2.以不發(fā)音的e結(jié)尾的單詞加上 r 如：nice--nicer 3.以輔音字母結(jié)尾的加上y結(jié)尾的單詞，變 y 為 i 再加上 er lazy--lazier 4.以重讀閉音節(jié)結(jié)尾的單詞雙寫輔音字母加上er 如：big--bigger 5.部分雙音節(jié)和多音節(jié)單詞在前面加上 more，如：interesting--more interesting 用法： 同級(jí)比較：1.“as+adj/adv+as或not so(as)+adj/adv+as.”句型。
該句型常用來描述兩個(gè)比較對象的程度上的相似或不同（即平時(shí)說的“等級(jí)比較和不等級(jí)比較”）。 如：he is as tall as I 他和我一樣高 比較： 1.用于兩者比較的選擇疑問句 who is taller ,Tom or Jim ? 2.用于下列句型： 主語（be動(dòng)詞）+形容詞比較級(jí) +than +比較對象 he is more outgoing than I 主語+行為動(dòng)詞+副詞比較級(jí) +than +比較對象 he runs faster than I 3.比較級(jí)+and+比較級(jí) 表示：越來越。
it's geting colder and colder 4.用于兩者中的一個(gè)：較。 用：the +比較級(jí) Lucy is the taller of the twins 露西是雙胞胎中較高的那個(gè) 暫時(shí)先告訴你這么多，以后還有更多的再給你講述 ? ?手工翻譯?尊重勞動(dòng)?歡迎提問?感謝采納? ?。
5.八年級(jí)英語上UNIT3知識(shí)點(diǎn)及語法重點(diǎn)
短語1. babysit one's sister照顧妹妹 2. visit one's grandmother看望奶奶3. spend time with friends和朋友們一起度過時(shí)光 4. visit cousins看望表弟等5. Go to sports camp去運(yùn)動(dòng)野營 6.go to the beach去海灘 7. go camping去野營8. Go shopping去買東 9. go swimming去游泳 10. go boating去劃船 11. go skating去溜冰12. go walking去散步 13. go climbing去登山 14. go dancing去跳舞 15. go hiking 去徒步遠(yuǎn)足16. go sightseeing去觀光 17. go house-hunting去找房子 18.go on a hike徒步旅行，go bike riding騎自行車旅行，go fishing去釣魚 19. do some shopping買東西20. do some washing洗衣服 21. do some cooking作飯 22. do some reading讀書23. do some speaking訓(xùn)練口語 24. do some sewing做縫紉活 25.that sounds nice那好極了26. at home在家 27. how about=what about ……怎么樣？28. how long多長時(shí)間29. how far多遠(yuǎn) 30. how often多長時(shí)間一次 31. how much, how many多少32. have a good time =have fun= have a wonderful time= enjoy oneself 玩得高興，過得愉快 33. show sb. Sth.=show sth. to sb.出示某物給某人看 give me the book=give the book to me給我書，pass me the cup=pass the cup to me把杯子遞給我，sell me the house=sell the house to me把房子賣給我buy me a book =buy a book for me給我買書，make me a cake=make a cake for me給我做蛋糕 34. get back=come back回來 35. rent videos租借影碟 36. take walks=go for a walk散步 37. think about考慮 38. decide on= decide upon決定一個(gè)計(jì)劃 39. something different不同的事情40.a great vacation一個(gè)愉快的假期 41. I can't wait我等不及了42. the famous movie star著名的影星43. an exciting vacation激動(dòng)人心的假期44. Ask her about her plans向她詢問她的計(jì)劃ask sb. about sth.向某人詢問某事 45. forget to do sth.忘記要做某事，forget doing sth.忘記做過某事句型1.What are you doing for vacation? I'm babysitting my sister.假期你要做什么？我要照顧我的妹妹。
2.Who are you going with? I'm going with my parents.你要和誰一起去？我要和父母一起去。3.When is he going camping? He is going on the 12th of February, 2005.4.I'm going to Tibet for a week.我要去西藏一周。
5.What are you doing there? I'm going hiking in the mountains.你在那里要做什么？我要在山區(qū)里遠(yuǎn)足。6.Show me your photos when we get back to school.我們返回學(xué)校時(shí)，你把照片拿給我看。
7.Where are you going for vacation? I'm going to Hawaii for vacation.8.I'm going to Hawaii for vacation in December, and I'm staying for three weeks.9.What is it like there？那里什么樣子？10. Can I ask you some questions about your vacation plans？我可以問你一些有關(guān)你假期計(jì)劃的問題嗎？11. He thought about going to Greece or Spain, but decided on Canada.他考慮去希臘或西班牙，但是最后他決定去加拿大。12. He is leaving the first week in June and staying until September.他將在6月的第一個(gè)星期動(dòng)身，一直呆到9月。
13. Please don't forget to close the door when you leave.你離開時(shí)，請別忘記關(guān)門。14.She couldn't wait to get home to see he parents. 她迫不及待的想回家看望父母。
6.求八下英語第三單元知識(shí)點(diǎn)總結(jié)~~速度啊,在線等
Unit 3What were you doing when the UFO arrived?
1.in front of…在…的前面（范圍外） in the front of （范圍內(nèi)）
2.get out of …從…出來
3.take off from… 從…起飛
4.land on …降落…
5.call the police 報(bào)警
6.at around 10 o'clock 在大約10點(diǎn)鐘
7.follow sb to do sth 跟隨某人做某事
8.walk down …沿著…走
9.jump down 跳下來
10.take a photo 照像
11. on/in the tree在樹上
12.run away 逃跑
13.think about …考慮…
14.ask sb (not) to do sth 請某人（不要）做某事
15.in silence 沉默地
16.at that time 在那時(shí) at this time 在這時(shí)
17.in space 在太空中
18.Man walked on the moon for the first time . 人類第一次在月球上行走.
19.all over the world =around the world 全世界
20.in the city of …在…市
21.take place = happen 發(fā)生
22.hear about … 聽說…
23.be born 出生
24.as +形/副（原級(jí)）+as …與…一樣
25.The girl was shopping when the alien got out. /While the girl was shopping ,the alien got out . 當(dāng)女孩在買東西的時(shí)候，外星人出來了.
