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as,when,while的用法區(qū)別詳解

時(shí)間:2022-09-24 02:06:34 英語詞匯 我要投稿
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as,when,while的用法區(qū)別詳解

  對(duì)于英語詞匯的把握往往可以體現(xiàn)一個(gè)人的英語水平,下面是小編整理的一些關(guān)于as,when,while的用法區(qū)別詳解,希望大家通過這篇分享可以更好地認(rèn)識(shí)這三個(gè)詞。

  as, when,while 的用法區(qū)別詳解

  三者都有“當(dāng)……時(shí)候”的意思,注意以下用法與區(qū)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(xù)性動(dòng)作時(shí),三者都可用。如:

  He fell asleep when [while, as] he was reading. 他看書時(shí)睡著了。

  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(xù)性動(dòng)詞表示“在……期間”時(shí),其謂語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(dāng)你在郵局時(shí),能幫我買幾張郵票嗎?

  2. 若主、從句表示兩個(gè)同時(shí)進(jìn)行的持續(xù)性動(dòng)作,且強(qiáng)調(diào)主句表示的動(dòng)作延續(xù)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)不要說話。

  I kept silent while he was writing. 在他寫的時(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(xù)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)來時(shí),我在聽收音機(jī)。

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

  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(dāng)于漢語的“隨著”,一般用 as。如:

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

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

  6. 表示“每當(dāng)……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(jiǎng)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. 他回來時(shí),我就回家去。

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

  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 則沒有類似用法。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(gòu)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(dāng)他還是個(gè)學(xué)生的時(shí)候,他就寫了一本小說。

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

  When [While] reading, he fell asleep. 他看書時(shí)睡著了。

  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(xí),不然到老了你會(huì)后悔的。

  相關(guān)閱讀:

  as引導(dǎo)的定語從句

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

  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,在定語從句中作賓語)

  Please choosesuchapplesascan be put in my bracket.

  請(qǐng)選擇我能放入籃子里這樣的蘋果。

 。╝s在定語從句中作主語)

  I am notthe samekind of personasyou are.

  我可不是和你一類的人。

  (as在從句中作表語)

  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)

  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(xí)了大量在超市能找到的那種飲料。

  慣用型3:

  as…

  …, as…

  as引導(dǎo)的定語從句,有時(shí)像非限制性定語從句一樣修飾整個(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(xì)的解讀,大家請(qǐng)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(zhuǎn)發(fā)啊~~~發(fā)動(dòng)大家來做作業(yè),學(xué)英語~

  英語作業(yè)

  改錯(cuò)(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?

  分析句子的英語語法結(jié)構(gòu),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.

  英語作業(yè)參考答案:

  我很想知道這是不是我的過錯(cuò),如果是,當(dāng)然我應(yīng)該向他道歉,如果不是,那是誰的錯(cuò)呢?是他自己的錯(cuò)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?yàn)槲抑浪且粋(gè)通情達(dá)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 定語從句

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

  1.在非限定性定語從句中,無論如何也不能用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.

  這本書你可以在鎮(zhèn)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(xiàn)介詞時(shí)

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

  那些你不用帶護(hù)照可以旅行的日子一去不復(fù)返了。

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

  那是我們?cè)S多年以前停留的汽車旅館。(此處which不可替換為that)

  3.當(dāng)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(xiàn)過. (結(jié)合具體語境看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(shí)來自不同領(lǐng)域并且它也彰顯這人類的智慧。(從句中that指前面的知識(shí),只能用which作關(guān)系詞)

  4當(dāng)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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