英語的時(shí)態(tài)(tense)是一種動(dòng)詞形式,不同的時(shí)態(tài)用以表示不同的時(shí)間與方式。
下面就英語中常見的八種基本時(shí)態(tài)進(jìn)行闡述,其它的時(shí)態(tài)都是在這八種時(shí)態(tài)的基礎(chǔ)上結(jié)合而成的。 一、一般現(xiàn)在時(shí): 1.概念:經(jīng)常、反復(fù)發(fā)生的動(dòng)作或行為及現(xiàn)在的某種狀況。
2.時(shí)間狀語: always, usually, often, sometimes, every week (day, year, month…), once a week, on Sundays, 3.基本結(jié)構(gòu):動(dòng)詞 原形 (如主語為第三人稱單數(shù),動(dòng)詞上要加(e)S) 4.否定形式:am/is/are+not;此時(shí)態(tài)的謂語動(dòng)詞若為行為動(dòng)詞,則在其前加don't,如主語為第三人稱單數(shù),則用doesn't,同時(shí)還原行為動(dòng)詞。 5.一般疑問句:把be動(dòng)詞放于句首;用助動(dòng)詞do提問,如主語為第三人稱單數(shù),則用does,同時(shí),還原行為動(dòng)詞。
6.例句:. It seldom snows here. He is always ready to help others. Action speaks louder than words. 二、一般過去時(shí): 1.概念:過去某個(gè)時(shí)間里發(fā)生的動(dòng)作或狀態(tài);過去習(xí)慣性、經(jīng)常性的動(dòng)作、行為。 2.時(shí)間狀語:ago, yesterday, the day before yesterday, last week(year, night, month…), in 1989, just now, at the age of 5, one day, long long ago, once upon a time, etc. 3.基本結(jié)構(gòu):be動(dòng)詞;行為動(dòng)詞 4.否定形式:was/were+not;在行為動(dòng)詞前加didn't,同時(shí)還原行為動(dòng)詞。
5.一般疑問句:was或were放于句首;用助動(dòng)詞do的過去式did 提問,同時(shí)還原行為動(dòng)詞。 6.例句:She often came to help us in those days. I didn't know you were so busy. 三、現(xiàn)在進(jìn)行時(shí): 1.概念:表示現(xiàn)階段或說話時(shí)正在進(jìn)行的動(dòng)作及行為。
2.時(shí)間狀語:now, at this time, these days, etc. 3.基本結(jié)構(gòu):am/is/are+doing 4.否定形式:am/is/are+not+doing. 5.一般疑問句:把be動(dòng)詞放于句首。 6.例句: How are you feeling today? He is doing well in his lessons. 四、過去進(jìn)行時(shí): 1.概念:表示過去某段時(shí)間或某一時(shí)刻正在發(fā)生或進(jìn)行的行為或動(dòng)作。
2.時(shí)間狀語:at this time yesterday, at that time或以when引導(dǎo)的謂語動(dòng)詞是一般過去時(shí)的時(shí)間狀語等。 3.基本結(jié)構(gòu):was/were+doing 4.否定形式:was/were + not + doing. 5.一般疑問句:把was或were放于句首。
6.例句:At that time she was working in a PLA unit. When he came in, I was reading a newspaper. 五、現(xiàn)在完成時(shí): 1.概念:過去發(fā)生或已經(jīng)完成的動(dòng)作對現(xiàn)在造成的影響或結(jié)果,或從過去已經(jīng)開始,持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)。 2.時(shí)間狀語:recently, lately, since…for…,in the past few years, etc. 3.基本結(jié)構(gòu):have/has + done 4.否定形式:have/has + not +d one. 5.一般疑問句:have或has。
6.例句:I've written an article. It has been raining these days. 六、過去完成時(shí): 1.概念:以過去某個(gè)時(shí)間為標(biāo)準(zhǔn),在此以前發(fā)生的動(dòng)作或行為,或在過去某動(dòng)作之前完成的行為,即“過去的過去”。 2.時(shí)間狀語:before, by the end of last year(term, month…),etc. 3.基本結(jié)構(gòu):had + done. 4.否定形式:had + not + done. 5.一般疑問句:had放于句首。
6.例句:As soon as we got to the station, the train had left. By the end of last month. We had reviewed four books 七、一般將來時(shí): 1.概念:表示將要發(fā)生的動(dòng)作或存在的狀態(tài)及打算、計(jì)劃或準(zhǔn)備做某事。 2.時(shí)間狀語:tomorrow, next day(week, month, year…),soon, in a few minutes, by…,the day after tomorrow, etc. 3.基本結(jié)構(gòu):am/is/are/going to + do;will/shall + do. 4.否定形式:was/were + not; 在行為動(dòng)詞前加didn't,同時(shí)還原行為動(dòng)詞。
5.一般疑問句:be放于句首;will/shall提到句首。 6.例句:They are going to have a competition with us in studies. It is going to rain. 八、過去將來時(shí): 1.概念:立足于過去某一時(shí)刻,從過去看將來,常用于賓語從句中。
2.時(shí)間狀語:the next day(morning, year…),the following month(week…),etc. 3.基本結(jié)構(gòu):was/were/going to + do;would/should + do. 4.否定形式:was/were/not + going to + do;would/should + not + do. 5.一般疑問句:was或were放于句首;would/should 提到句首。 6.例句:He said he would go to Beijing the next day. I asked who was going there。
為什么要學(xué)習(xí)GO語言,GO的優(yōu)勢是什么?
1、Go有什么優(yōu)勢
Go的優(yōu)勢
1:性能
2:語言性能很重要
3:開發(fā)者效率&不要過于創(chuàng)新
4:并發(fā)性&通道
5:快速的編譯時(shí)間
6:打造團(tuán)隊(duì)的能力
7:強(qiáng)大的生態(tài)系統(tǒng)
8:GOFMT,強(qiáng)制代碼格式
9:gRPC 和 Protocol Buffers
可直接編譯成機(jī)器碼,不依賴其他庫,glibc的版本有一定要求,部署就是扔一個(gè)文件上去就完成了。
靜態(tài)類型語言,但是有動(dòng)態(tài)語言的感覺,靜態(tài)類型的語言就是可以在編譯的時(shí)候檢查出來隱藏的大多數(shù)問題,動(dòng)態(tài)語言的感覺就是有很多的包可以使用,寫起來的效率很高。
Go全棧+區(qū)塊鏈課程為幾周?分幾個(gè)階段?每個(gè)階段講多久?學(xué)完每個(gè)階段達(dá)到什么程度?
一共22周,分為5個(gè)階段,
第一階段4周 go語言基礎(chǔ)與網(wǎng)絡(luò)并發(fā) ,學(xué)完入門go語言,
第二階段 4周 go語言實(shí)戰(zhàn)web開發(fā),爬蟲開發(fā),密碼學(xué),共識(shí)算法,實(shí)現(xiàn)輕量級公鏈,學(xué)完可以開發(fā)golang的網(wǎng)站,爬蟲,實(shí)現(xiàn)輕量級區(qū)塊鏈
第三階段 4周 以太坊源碼分析與智能合約Dapp開發(fā),學(xué)完掌握以太坊核心與開發(fā)智能合約,以及區(qū)塊鏈,
第四階段 4周 超級賬本,比特幣 EOS,源碼分析與智能合約實(shí)戰(zhàn),學(xué)完以后掌握超級賬本開發(fā),山寨比特幣,分叉EOS,以及智能合約Dapp開發(fā)
第五階段 6周 項(xiàng)目實(shí)戰(zhàn) ,實(shí)戰(zhàn)5個(gè)企業(yè)級項(xiàng)目,學(xué)完可以擁有1年區(qū)塊鏈項(xiàng)目經(jīng)驗(yàn)
.
詞組:八年級下 Unit1 1. 免費(fèi) be free 3. 活到200歲 live to be 200 years old 5. 更少的污染 less pollution 7. 更少地使用地鐵 use the subway less 9. 更多的高樓 more tall buildings 11. 十年后 in ten years 13. 住的地方 places to live 15. 住在太空站 live on the space station 17. 住在公寓 live in an apartment 19. 一個(gè)人住 live alone/by oneself 21. 去滑冰 go skating 23. 看起來很時(shí)髦 look smart 25. 穿著隨意 dress casually 27. 實(shí)現(xiàn) come true 29. 在未來 in the future 八年級下 Unit 2 argued with sb. 與某人生氣 have an argument with sb.與某人生氣 out of style 不時(shí)髦的 in style 時(shí)髦的 keep out 不讓……進(jìn)入 call sb. up 打電話給…… on the phone 用電話交談 pay for 付款 part-time job 兼職工作 Teen Talk 青少年論壇 the same as 與…同樣的 get on 相處 as much as possible 盡可能多 all kinds of 各種 on the other hand一方面 borrow sth. from sb.向某人借某物 found out 找出 is popular at school 在學(xué)校受歡迎 except me 除了我 have a quick supper 去吃快餐 not……until 直到……才 try to do 試著去做 complain about doing sth.抱怨做某事 seem to do comparing…with 把…與…做比較 think for 為…著想 find it +adj.+to do sth.發(fā)現(xiàn)做某事很怎樣 learn to do 學(xué)會(huì)做某事 八年級下 Unit 3 barber shop 理發(fā)店 get out 出去 take off 起飛 train station 火車站 come in 進(jìn)來 Beijing International Airport北京國際機(jī)場 hear about 聽說 take place 發(fā)生 World Trade Center世界貿(mào)易中心 as…as 和…一樣 in front of 在…的前面 clean my room打掃我的房間 sleep late 睡懶覺 make a smooth做思木西 cook dinner 做晚飯 eat lunch 吃中午飯 cut hair 剪頭發(fā) have…experience有…經(jīng)歷 in the morning 在早晨 walk down 走下來 very surprised 非常驚奇 souvenir shop 紀(jì)念品商店 TV station 電視臺(tái) in the museum 在博物館 climb a tree 爬樹 jump down 跳下 take a photo 照相 called the police報(bào)警 rode his bicycle 騎自行車 buy a newspaper買一份報(bào)紙 run away 逃跑 think about 考慮…做某事 for example 舉例子 heard about 聽說 having fun 玩的高興 in silence 在… told us 告訴我們 in space 在太空 over the world遍及全世界 became famous因…而出名 next to 挨著 1. arrive at/in 2. a TV reporter 3. in front of 4. in the front of 5. get out of 6. sleep late 7. in(at) the library 8. the Museum of Flight 9. buy a souvenir 10. call the police 11. call the TV station 12. call the newspaper 13. take off 14. an unusual experience 15. jump down from 16. take photos of 17. too scared 18. walk to school 19. in the tree 20. on the tree 21. police officer 22. at the doctor's 23. go shopping( do some shopping) 24. a barber shop 25. on/in the playground 26. ten minutes ago 27. in silence 28. keep silent/quiet 29. take place 30. become a national hero 31. become/be famous for 32. become/be famous as 33. all over the world (in the world) 34. in turn 35. have fun (enjoy oneself) 36. on the moon 37. be murdered 38. be destroyed 39. on this day 40. hear about/of 41. be born 42. cut hair ( have one's cut) 八年級下 Unit 5 Have a great time玩的高興 let in ` ```進(jìn)來 stay at home 呆在家 Help sb. (to) do sth..幫助某人做某事 take away 拿走 ask sb. To sth At the party 在晚會(huì)上 go to college 去大學(xué) be\become famous變的有名 Travel around the world環(huán)游世界 make money 掙錢 work hard 努力工作 A professional soccer player 一名職業(yè)足球運(yùn)動(dòng)員 seem like 看起來像 Make a living 謀生 all over the world世界各地 give money to 捐錢 All the time 一直 for a living 為``````謀生 get injured 受傷 in fact 事實(shí)上 Be able to 能夠 be going to spend time 消磨時(shí)間 too much 太多 laugh at 笑話某人 go back In order 為了`````` 八年級下 Unit 9 be late for 遲到 look like 看起來象 in order 按順序 by noon 到中午為止 on the weekend 在周末 have a good day!玩的愉快 looking through 瀏覽 waiting inline 排隊(duì) really low 降低 tell sb. about yourself告訴某人有關(guān)你的事 a ball game fan 球迷 be friendly to sb.對某人友好 feel like 感覺像 a friend like you 像你一樣的朋友 get along 相處 thanks for 因……而感謝 ask sb. To do sth.要求某人做某事 go with me 和我一起去 think of 想起 leave early 早早離開 at least 至少 be careful 小心 八年紀(jì) 下冊 Unit 10 most of 大多數(shù) make sb. Laugh讓某人笑 like to do 喜歡做某事 like doing both like 都喜歡 the same like 和``````一樣 for me 對我來說 get the job 上班 enjoy doing sthmake sb. do sth want sb. to do sth.let sb. to do sth.take spend cost:take spend cost 區(qū)別的用法都可以表示“花費(fèi)”,但用法卻不盡相同。
spend的主語必須是人, 常用于以下結(jié)構(gòu): (1) spend time /money on sth. 在……上花費(fèi)時(shí)間(金錢)。例:I spent two hours on this maths problem. 這道數(shù)學(xué)題花了我兩個(gè)小時(shí)。
(2) spend time / money (in) doing sth. 花費(fèi)時(shí)間(金錢)做某事。例:They spent two years (in) building this bridge. 造這座橋花了他們兩年時(shí)間。
(3)。
介詞和它的賓語構(gòu)成介詞詞組,在句中作狀語,表語,補(bǔ)語或介詞賓語。
并且在定語從句“介詞+whom/which”的結(jié)構(gòu)中,不能用that 代替whom/which。She is a good student from whom we shoul]1.表示地點(diǎn)位置的介詞)at ,in, on, to,for at (1)表示在小地方; (2)表示“在……附近,旁邊”in (1)表示 在大地方; (2)表示“在…范圍之內(nèi)”on 表示毗鄰,接壤,“在……上面”。
to 表示在……范圍外,不強(qiáng)調(diào)是否接壤;或“到…… 2)above, over, on 在……上 above 指在……上方,不強(qiáng)調(diào)是否垂直,與 below相對; over指垂直的上方,與under相對,但over與物體有一定的空間,不直接接觸。 on表示某物體上面并與之接觸。
The bird is flying above my head. There is a bridge over the river.He put his watch on the desk.3)below, under 在……下面under表示在…正下方below表示在……下,不一定在正下方 There is a cat under the table.Please write your name below the line. 4)in front [frant]of, in the front of在……前面in front of…意思是“在……前面”,指甲物在乙物之前,兩者互不包括;其反義詞是behind(在……的后面)。 There are some flowers in front of the house.(房子前面有些花卉。)
in the front of 意思是“在…..的前部”,即甲物在乙物的內(nèi)部.反義詞是at the back of…(在……范圍內(nèi)的后部)。There is a blackboard in the front of our classroom我們的教室前邊有一塊黑板。
Our teacher stands in the front of the classroom我們的老師站在教室前.(老師在教 5)beside,behind beside 表示在……旁邊 behind 表示在……后面 編輯本段]2.表示時(shí)間的介詞 1)in , on,at 在……時(shí) in表示較長時(shí)間,如世紀(jì)、朝代、時(shí)代、年、季節(jié)、月及一般(非特指)的早、中、晚等。 如 in the 20th century, in the 1950s, in 1989, in summer, in January, in the morning, in one's life , in one's thirties等。
on表示具體某一天及其早、中、晚。 如on May 1st, on Monday, on New Year's Day, on a cold night in January, on a fine morning, on Sunday afternoon等。
at表示某一時(shí)刻或較短暫的時(shí)間,或泛指圣誕節(jié),復(fù)活節(jié)等。 如at 3:20, at this time of year, at the beginning of, at the end of …, at the age of …, at Christmas, at night, at noon, at this moment等。
注意:在last, next, this, that, some, every 等詞之前一律不用介詞。如:We meet every day. 2)in, after 在……之后 “in +段時(shí)間”表示將來的一段時(shí)間以后;“after+段時(shí)間”表示過去的一段時(shí)間以后;“after+將來點(diǎn)時(shí)間”表示將來的某一時(shí)刻以后。
3)from, since 自從…… from僅說明什么時(shí)候開始,不說明某動(dòng)作或情況持續(xù)多久;since表示某動(dòng)作或情況持續(xù)至說話時(shí)刻,通常與完成時(shí)連用。4)after, behind 在……之 after主要用于表示時(shí)間;behind主要用于表示位置。
時(shí)間名詞前介詞用法口訣 年前周前要用in具體日子卻要禁遇到幾號要用on 上午下午又是in 要說某日上下午 用on換in記清楚午夜黃昏用at黎明用它也不錯(cuò)at用在時(shí)分前 說“差”可要用上to說"過''要用past [編輯本段]3.表運(yùn)動(dòng)方向的介詞:across, through 通過,穿過 across表示橫過,即從物體表面通過,與on有關(guān);hrough穿過,即從物體內(nèi)部穿過,與in有關(guān)。
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