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as,when,while的用法區別詳解

時(shí)間:2023-10-24 23:30:01 英語(yǔ)詞匯 我要投稿
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as,when,while的用法區別詳解

  對于英語(yǔ)詞匯的把握往往可以體現一個(gè)人的英語(yǔ)水平,下面是小編整理的一些關(guān)于as,when,while的用法區別詳解,希望大家通過(guò)這篇分享可以更好地認識這三個(gè)詞。

  as, when,while 的用法區別詳解

  三者都有“當……時(shí)候”的意思,注意以下用法與區別:

  1. 若主句表示的是一個(gè)短暫性的動(dòng)作,而從句表示的是一個(gè)持續性動(dòng)作時(shí),三者都可用。如:

  He fell asleep when [while, as] he was reading. 他看書(shū)時(shí)睡著(zhù)了。

  I met him when [as, while] I was taking a walk in the park. 我在公園散步時(shí)遇到了他。

  注:as 用于引出一個(gè)持續性動(dòng)詞表示“在……期間”時(shí),其謂語(yǔ)通常只能是那些含有動(dòng)作和發(fā)展 意味的動(dòng)詞,一般不能是那些不用于進(jìn)行時(shí)態(tài)的動(dòng)詞,所以下面一句中的 while 不能換為 as:

  A:I’m going to the post office. 我要去郵局。

  B:While you are there, can you get me some stamps? 當你在郵局時(shí),能幫我買(mǎi)幾張郵票嗎?

  2. 若主、從句表示兩個(gè)同時(shí)進(jìn)行的持續性動(dòng)作,且強調主句表示的動(dòng)作延續到從句所指的整個(gè)時(shí)間,通常要用 while。如:

  Don’t talk while you’re eating. 吃飯時(shí)不要說(shuō)話(huà)。

  I kept silent while he was writing. 在他寫(xiě)的時(shí)候,我默不作聲。

  但是,若主、從句表示的兩個(gè)同時(shí)進(jìn)行的動(dòng)作含有“一邊……一邊”之意思,通常要用 as。如:

  She sang as she went along. 她邊走邊唱。

  3. 若從句是一個(gè)短暫性動(dòng)作,而主句是一個(gè)持續性動(dòng)作,可以用 as 或 when 但不用 while。如:

  When [As] he came in, I was listening to the radio. 他進(jìn)來(lái)時(shí),我在聽(tīng)收音機。

  It was raining hard when [as] we arrived. 我們到達時(shí)正下著(zhù)大雨。

  4. 若主、從句表示的是兩個(gè)同時(shí)發(fā)生的短暫性動(dòng)作,一般要用 as 。如:

  I thought of it just when [as] you opened your mouth. 就在你要說(shuō)的時(shí)候,我也想到了。

  5. 若要表示兩個(gè)正在發(fā)展變化的情況,相當于漢語(yǔ)的“隨著(zhù)”,一般用 as。如:

  Things are getting better and better as time goes on. 隨著(zhù)時(shí)間的推移,情況越來(lái)越好。

  As it grew darker, it became colder. 天色越晚,天氣越冷。

  6. 表示“每當……的時(shí)候”,一般要用 when。如:

  It’s cold when it snows. 下雪時(shí)天冷。

  He smiles when you praise him. 你夸獎他時(shí)他總是笑笑。

  7. 若主、從句所表示的動(dòng)作不是同時(shí)發(fā)生,而是有先后順序時(shí),一般要用 when。如:

  I will go home when he comes back. 他回來(lái)時(shí),我就回家去。

  I will discuss this with you when we meet next time. 我們下次見(jiàn)面時(shí),我要同你討論這個(gè)問(wèn)題。

  8. when 可用作并列連詞,表示“這時(shí)”;while 也可以用作并列連詞,表示“而”、“卻”;但 as 則沒(méi)有類(lèi)似用法。如:

  We were about to start when it began to rain. 我們正要出發(fā),這時(shí)天開(kāi)始下雨了。

  He likes coffee, while she likes tea. 他喜歡咖啡,而她卻喜歡茶。

  9. as 和 when 之后均可直接跟一個(gè)名詞,構成省略句; 但是 while 一般不這樣用。如:

  As [When] a boy, he lived in Japan. 他小時(shí)候在日本。

  As [When] still a student, he wrote a novel. 當他還是個(gè)學(xué)生的時(shí)候,他就寫(xiě)了一本小說(shuō)。

  10. when 和 while 之后可接現在分詞、介詞短語(yǔ)、形容詞等構成省略句,但 as 一般不這樣用。如:

  When [While] reading, he fell asleep. 他看書(shū)時(shí)睡著(zhù)了。

  When [While] in trouble, ask her for help. 遇到麻煩的時(shí)候你就去找她幫忙。

  You must study hard while young, or you will regret when old. 你趁年輕時(shí)必須努力學(xué)習,不然到老了你會(huì )后悔的。

  相關(guān)閱讀:

  as引導的定語(yǔ)從句

  在一些習慣用法上,as能兼作關(guān)系代詞、關(guān)系副詞,經(jīng)常引導定語(yǔ)從句。

  慣用型1:

  such… as…像……一樣的

  the same…as…與……同樣的

  I seldom meetsucha beggarasI met today.

  我很少碰到今天這樣的乞丐。

 。╝s是代詞,在定語(yǔ)從句中作賓語(yǔ))

  Please choosesuchapplesascan be put in my bracket.

  請選擇我能放入籃子里這樣的蘋(píng)果。

 。╝s在定語(yǔ)從句中作主語(yǔ))

  I am notthe samekind of personasyou are.

  我可不是和你一類(lèi)的人。

 。╝s在從句中作表語(yǔ))

  You may takethe samebusaswe take.

  你可乘坐我們坐的同一輛大巴。

 。╝s在從句中作賓語(yǔ))

  慣用型2:

  such as…

  在這種場(chǎng)合,such是代詞,表示“這種人、這種物”,as是關(guān)系代詞。

  He is notsuchasyou can imagine.

  他不是你能想象得到的那種人。

  We have got a lot of drinkssuchasyou can find in supermarkets.

  我們習了大量在超市能找到的那種飲料。

  慣用型3:

  as…

  …, as…

  as引導的定語(yǔ)從句,有時(shí)像非限制性定語(yǔ)從句一樣修飾整個(gè)主句或者主句的一部分,但它的位置比較靈活,可以放在被修飾的主句后面,也可以放在主句前面。

  例如:

  Asyou can see, we are all students.

  你能看得出,我們都是學(xué)生。

  =We are allstudents,asyou can see.

  =We are all students,whichyou can see.

 。ㄟ@是詳細的解讀,大家請熟悉。

  Asyou know, we need to hurry up.

  大家知道,我們需要加快速度。

  He is not very honest,asyou have proved.

  她不是很誠實(shí),這一點(diǎn)你已證實(shí)了。

  歡迎轉發(fā)啊~~~發(fā)動(dòng)大家來(lái)做作業(yè),學(xué)英語(yǔ)~

  英語(yǔ)作業(yè)

  改錯(正確句子不改):

  6. I had a friend who working in a hi-tech company.

  7.Do you remember the fat man we talked 10 days ago?

  8.Don’t worry about the mistakes that you would possibly make.

  9.It was the day in which we got together.

  10.Is this the house which you are living?

  分析句子的英語(yǔ)語(yǔ)法結構,并翻譯成中文:

  Qatar could face further sanctions by Arab states as a deadline to accept a series of demands from its Gulf neighbours, including closing down the television network al-Jazeera, passes on Sunday night. Rex Tillerson, the US secretary of state, was working the phones to see whether acompromise could be reached but Qatari leaders have effectively rejected the 13demands tabled 10 days ago by Saudi Arabia, the United Arab Emirates, Egypt and Bahrain.

  英語(yǔ)作業(yè)參考答案:

  我很想知道這是不是我的過(guò)錯,如果是,當然我應該向他道歉,如果不是,那是誰(shuí)的錯呢?是他自己的錯嗎?突然,我有了一個(gè)好主意——我可以同他去談?wù)。我想他不?huì )拒絕與我交談的,因為我知道他是一個(gè)通情達理的人。

  I wondered whether it was my fault. If it was my fault, of course I should apologize to him. If it was not my fault, whose fault was it? Was it his own fault? Suddenly, I got a good idea that I could have a talk with him. I thought he wouldn't refuse to talk with me because I knew he was a reasonable man.

  which 定語(yǔ)從句

  Which 和that同為關(guān)系代詞,都可指物,并且有時(shí)會(huì )覺(jué)得用that 也可以,用which 也沒(méi)錯。但在哪些情況下是只能用which的呢?

  1.在非限定性定語(yǔ)從句中,無(wú)論如何也不能用that

  A.This brunch of carnation, which is wound by silk ribbon ,is the first gift to my mom.

  這束康乃馨是送給媽媽的第一份禮物,它被絲帶所纏繞。

  B.These books,which you can get at any corner of the town will give you all the information.

  這本書(shū)你可以在鎮里的各個(gè)角落獲取得到,它會(huì )給你所有的信息。

  2.關(guān)系代詞前面出現介詞時(shí)

  A.Those days in which you could travel without a passport has gone.

  那些你不用帶護照可以旅行的日子一去不復返了。

  B.That`s the motel at which we stayed several years ago.

  那是我們許多年以前停留的汽車(chē)旅館。(此處which不可替換為that)

  3.當先行詞本身為that(指代)時(shí)

  A.what about that which had appeared in recent activities.

  那個(gè)怎么樣,在最近的活動(dòng)中出現過(guò). (結合具體語(yǔ)境看that所指代的是什么)

  B.The knowledge are from various fields and that which display the waves of human being.

  知識來(lái)自不同領(lǐng)域并且它也彰顯這人類(lèi)的智慧。(從句中that指前面的知識,只能用which作關(guān)系詞)

  4當先行詞是baby, child等詞時(shí)

  A.Have you notice that child which has lost his way to home in the supermarket ?

  在超市,你注意到那個(gè)找不到回家路的孩子了嗎?

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