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老師發(fā)現(xiàn)一些學(xué)生睡著了。例如:The reason he did not e is that he was ill. 他沒來的原因是他病了。 when。4. Once out in the street, she walked quickly towards her usual bus stop. 一出來到大街上,她就很快地朝她平常等的汽車站走去。 學(xué)案:Language points of Module3 Unit 1 The world of our senses Part I Wele to the unit Part II Reading1. When Polly left home that morning, the city was already covered in a grey mist. 波莉離開家的那天早晨,這座城市已籠罩在灰白色的霧氣中。No wonder you’re that/so tired, you’ve been walking for hours. 難怪你那么累,你一直走了好幾個小時。例如:Once published (publish), this dictionary will be very popular.Once seen (see), it will never be forgotten. Once seeing(see) Jim, I will inform him of the news.Words of similar use: if。 句中第一個that引導(dǎo)的是表語從句。6. As Polly observed the passengers on the train, she had a feeling that she was being watched by a tall man in a dark overcoat. Line1415observe: vt. 觀察 observe sth./sb.。The man in a uniform is a detective. ___________________________。The rest of the books are on the shelf. 剩余的那些書在架子上。通常不定式的邏輯主語是動作的承受者時,且動作的施動者不明確時,不定式要用被動語態(tài)。例如:The missing wallet is nowhere to be found. 丟失的錢包任何地方都找不著。Line2021set off 動身,出發(fā)(常與for連用);引爆,使爆炸;引起,激發(fā)Panic on the stock market set off a wave of selling. 股票市場上人心惶惶,掀起了拋售浪潮。③當(dāng)主句的謂語有表狀態(tài)的be動詞時,主句通常不用完成時態(tài)?,F(xiàn)在她想到的是跑掉,但是因?yàn)榭謶郑粍右膊荒軇印?2)adj. 寂靜的,無聲的The room was still at the end of the speech. 演講結(jié)束時,室內(nèi)一片寂靜。(指什么也不說)Ask the boys to keep quiet. 讓孩子們保持安靜。I39。watch out (for) look out (for) Cf. look out of take care (of) be careful of gives me the chance to pay back the help that people give me when it’s sunny. 這給了我一個機(jī)會,我可以回報在晴天里人們所給與我的幫助了