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ncreases. 隨著高度的增加,大氣越來(lái)越稀薄。因此,as 常常翻譯成“隨著……”之意?! ?. Just as he caught the ball, there was a tearing sound. 當(dāng)他抓住球的時(shí)候,有一種撕裂的聲音。 3. As we talked on, he got more and more excited. 我們繼續(xù)往下談的時(shí)候,他越來(lái)越興奮。例如: 1. As my mother sang those old songs, tears ran down her cheeks. 當(dāng)我媽媽唱起那些老歌時(shí),眼淚順著她的臉頰流了下來(lái)。但與 while 從句不同的是,as 從句用的一般不用正在進(jìn)行時(shí),而只是一般過(guò)去時(shí)。m going to the post office. —While you39。這顯然不符合文意。 這句話(huà)中,是說(shuō)趁著鐵是熱的這段時(shí)間,趕緊打鐵。因此,如果含有“一段時(shí)間”的含義的時(shí)候,就可以用while。 從時(shí)間的角度來(lái)看,while 表示的是一段時(shí)間,是一個(gè)過(guò)程?! ?. You can’t do your homework while you’re watching TV. 你不能一邊看電視一邊做家庭作業(yè)?! ?. While Jim was mending his bike, Lin Tao came to see him. 正當(dāng)吉姆修自行車(chē)時(shí),林濤來(lái)看他。而另一件事的狀態(tài)沒(méi)有硬性的要求,根據(jù)具體情況而定。while 從句的側(cè)重點(diǎn)在于描述動(dòng)作正在發(fā)生的狀態(tài),它的意思是:當(dāng)while 事件正在發(fā)生的時(shí)候,另一件事如何如何。 5. When the manager es here for a visit next week, I’ll talk with him about this. 下周,經(jīng)理來(lái)這參觀時(shí),我會(huì)和他談?wù)劥耸??! ?. When he had finished his homework, he took a short rest. 當(dāng)他完成作業(yè)后,他休息了一會(huì)兒?! ?shí)際上,when 從句也可以有其它的時(shí)態(tài),但幾乎也不用進(jìn)行時(shí),因?yàn)樗仓皇亲鳛橐粋€(gè)時(shí)間參照點(diǎn)。根據(jù)這一點(diǎn),有的文章補(bǔ)充說(shuō):when 從句的動(dòng)詞大多是瞬時(shí)動(dòng)詞。也就是說(shuō),when 從句的重點(diǎn)不在動(dòng)作本身發(fā)生的狀態(tài),而只是把它作為一個(gè)時(shí)間點(diǎn),所以when 多數(shù)情況下用的是一般過(guò)去時(shí),則不用正在進(jìn)行時(shí)?! ?. I had hardly[scarcely] closed my eyes when someone knocked at the door. 我剛一閉上眼,就有人在敲門(mén)了。 5. He was on the point of leaving when someone knocked at the door. 他正要走,這時(shí)有人敲門(mén)。 2. When she came into my room, I was just reading a book. 她走進(jìn)我房間時(shí),我正在看書(shū)。英語(yǔ)時(shí)間狀語(yǔ)從句講解與練習(xí)(一)when, while 和 as 引導(dǎo)時(shí)間狀語(yǔ)從句的用法 一、when 的用法 如果只從現(xiàn)象來(lái)看,when 從句用的最多的是一般過(guò)去時(shí),而主句的時(shí)態(tài)沒(méi)有限制,根據(jù)具體情況而定。 1. When he was a child he was always trying out new ideas. 他小時(shí)候就常常試驗(yàn)一些新的設(shè)想?! ?. Were you writing when the teacher came in? 老師進(jìn)來(lái)的時(shí)候,你在寫(xiě)信嗎? 4. Sorry, I was out when you called me. 對(duì)不起,你打電話(huà)來(lái)的時(shí)候我出去了。 6. I thought of it just when you opened your mouth. 就在你要說(shuō)話(huà)的時(shí)候,我也想到了。 根據(jù)以上的例句,我們可以總結(jié)出一點(diǎn):when 從句的A事件,相當(dāng)于另一個(gè)事件B發(fā)生的時(shí)間點(diǎn)。因?yàn)槿绻谜谶M(jìn)行時(shí),它表示的就是一段時(shí)間而不是一個(gè)時(shí)間點(diǎn)了。這種說(shuō)法也可以參照。例如: 1. When I got to the airport, the guests had left. 當(dāng)我趕到飛機(jī)場(chǎng)時(shí),客人們已經(jīng)離開(kāi)了。 3. Why do you want a new job when you have got such a good one already? 你已經(jīng)找到如此好的工作,為何還想再找新的? 4. You shall borrow the book when I have finished reading it. 在我讀完這本書(shū)后,你可以借閱。 二、while 的用法 相比于when 來(lái)說(shuō),while 從句的側(cè)重點(diǎn)就不一樣了。所以,while 從句一般用的是正在進(jìn)行時(shí)。例如: 1. While my wife was reading the newspaper, I was watching TV. 當(dāng)妻子正在看報(bào)紙的時(shí)候,我正在看電視?! ?. While they were talking, the bell rang. 正在他們談話(huà)的時(shí)候,上課鈴響了。 5. While John was sitting biting his nails, I was working out a plan to get us home. 約翰坐在那里咬指甲時(shí),我正在制定一個(gè)回家的計(jì)劃。這是while 的側(cè)重點(diǎn)。 6. Strike while the iron is hot. 趁熱打鐵。如果換成 when 意思就變了,相當(dāng)于說(shuō)鐵只熱了一下,打一下,然后鐵就冷了?! ≡倮骸 狪39。re there, can you get me