外研版高中英語教學(xué)課件Book2 Module3Period4 grammar

1、時(shí)間狀語從句時(shí)間狀語從句 常由常由從屬連詞從屬連詞when, while, as, since, till, before, after, by the time 等引導(dǎo)。等引導(dǎo)。Grammar 1 Adverbial clause of time 時(shí)間狀語從句時(shí)間狀語從句when 意為意為這時(shí)這時(shí)(at this time)或或那那時(shí)時(shí)(at that time) 時(shí)，常用于下列句型：時(shí)，常用于下列句型：Sb was doing when 某人正在做某人正在做 突然突然 Sb was about to do when 某人正要做某人正要做 突然突然 Sb had just done sth

2、when 某人剛剛干了某人剛剛干了這時(shí)這時(shí) while引導(dǎo)的從句表示引導(dǎo)的從句表示“在在過程過程中中”，強(qiáng)調(diào)某一段時(shí)間內(nèi)主句和從句的，強(qiáng)調(diào)某一段時(shí)間內(nèi)主句和從句的動(dòng)作在動(dòng)作在同一時(shí)期發(fā)生同一時(shí)期發(fā)生。因此。因此常用延續(xù)性常用延續(xù)性動(dòng)詞動(dòng)詞。可替換為。可替換為when。as引導(dǎo)的從句表示引導(dǎo)的從句表示“當(dāng)當(dāng)時(shí)；一時(shí)；一邊邊一邊一邊”，主句和從句的動(dòng)作，主句和從句的動(dòng)作同時(shí)發(fā)生，強(qiáng)調(diào)伴隨同時(shí)發(fā)生，強(qiáng)調(diào)伴隨。有時(shí)可譯為。有時(shí)可譯為“隨著隨著”。1. I was reading my teacher came in.2. they were doing homework, someone broke

3、into the house.3. I was about to talk in the classroom the teacher came in.4. they were walking, the girls were singing. 5. he was still young, he was a big star.6. I had just made the mistake mom came in . 7. he grew older, he found it difficult to compose good musicwhenWhile/whenwhenAsWhile/whenwh

4、enAs2) 時(shí)間狀語從句可以轉(zhuǎn)換成分詞短語。時(shí)間狀語從句可以轉(zhuǎn)換成分詞短語。如如: Boys need to develop their bodies fully before they attempt such difficult exercise. Boys need to develop their bodies fully before attempting such difficult exercise.After he worked there for 30years, Haydn moved to London. .Note: 時(shí)間狀語從句轉(zhuǎn)換成分詞短語時(shí)時(shí)間狀語從句轉(zhuǎn)換成分詞短語時(shí), , 時(shí)時(shí)間狀語從句的主語和主句主語必須間狀語從句的主語和主句主語必須一致才可以。一致才可以。 Having worked there for 30 years, Haydn moved to London. Grammar 2 Part 1Grammar 2 Part 2ons in Part 2 in four. Then report your answers to all.Grammar 2 Part 3Grammar 2 Part 4n check the answer with your partner. Answers to Part 4: Ass