江蘇省永豐初級(jí)中學(xué)八年級(jí)英語上冊u(píng)nit8naturaldisastersgrammar課件4新版牛津版(編輯修改稿)
2025-07-04 13:23 本頁面
【文章內(nèi)容簡介】 k at the following sentences carefully. Pay attention to the colored parts.3. Outside, people were running in all directions while pieces of glass and bricks were falling down.4. Hours later, as I was trying to find way out, I suddenly heard some noise above me. 1. I ___________ when it started to rain. 2. I was sleeping _____ the earthquake started. 3. Outside, people ____________ in all directions ______ pieces of glass and bricks ______________ down.4. Hours later, ___ I ____________ to find way out, I suddenly heard some noise above me.was sleepingwere runningwere fallingwas tryingwhenwhileas1. when, while 和 as 這三個(gè)詞都有 “當(dāng) …… 時(shí)候 ”的意思。 There were fewer sandstorms when my grandparents were young. 我祖父母年輕時(shí)沙塵暴要少些。Past continuous tense with ‘while’ , ‘when’ and ‘a(chǎn)s’While Mille was watching TV, her mum was sleeping.米莉在看電視時(shí)，媽媽在睡覺。I saw a traffic accident as I was riding to school this morning.今天早晨我騎自行車時(shí)看到一起交通事故。 和 as 既可以指某一點(diǎn)時(shí)間，也可以指某一段時(shí)間，其從句謂語動(dòng)詞表示的動(dòng)作既可以是瞬間性的，也可以是延續(xù)性的； while指一段時(shí)間，從句中的謂語動(dòng)詞必須是延續(xù)性的。即：指一段時(shí)間時(shí) when, while 和 as都可用；指一點(diǎn)時(shí)間時(shí)，只能用 when，不能用 while。試比較：1. When he woke up, it was eight o’clock.2. While he woke up, it was eight o’clock.3. When/While/As I was waiting for a bus, I met her.√√3. 當(dāng) while , when 和 as 放在句首時(shí)， 兩個(gè)句子應(yīng)用逗號(hào)隔開。When the teacher came in, we were talking.While the pig was dancing, the rabbit was jumping.As the two men were leaving, a message arrived. when 和 while 都可以引導(dǎo)時(shí)間狀語從句， 意為 “當(dāng) … 時(shí)候 ” 動(dòng)作同時(shí)在過去發(fā)生時(shí)，用過去進(jìn)行時(shí) ,用 while連接。People were running wildly while pieces of glass was falling down. was doing my homework my mother was cooking last night.(when, while)while2. She was dancing while her sister ___________ (listen) to music. was listening延續(xù)性動(dòng)詞，即可以持續(xù)很長時(shí)間的動(dòng)詞，如： enjoy, watch, read, play, stay, run等．He was watching TV while his mother was listening to music.瞬間動(dòng)詞即短暫性動(dòng)詞，如： die, start, stop, finish, arrive, leave, see, find, hear等 ． He was only five when his father died. He was eating when I saw him last night. I was flying a kite when it started to rain.， 短暫性動(dòng)詞用一般過去時(shí) . when +短暫性動(dòng)詞 while+延續(xù)性動(dòng)詞The earth
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