人教版八年級(jí)英語(yǔ)下冊(cè)Unit-5課件Section-A-2.ppt

1、Grammar Focus,1. 以when和while引導(dǎo)的時(shí)間狀語(yǔ)從句,1) 延續(xù)性動(dòng)詞和非延續(xù)性動(dòng)詞 延續(xù)性動(dòng)詞指動(dòng)作可以延續(xù)一段時(shí)間, 而不是 瞬間結(jié)束。 如: work、study、drink、eat等。 非延續(xù)性動(dòng)詞指動(dòng)作極為短暫，瞬間結(jié)束。 如: start、begin、hit、jump、knock等。,2) 在本單元中, 出現(xiàn)了以when和while引導(dǎo)的 時(shí)間狀語(yǔ)從句。 when表示“當(dāng)?shù)臅r(shí)候”。從句中既可用延續(xù)性 動(dòng)詞, 又可用非延續(xù)性動(dòng)詞, 這些動(dòng)詞既可以 表示動(dòng)作, 又可表示狀態(tài)。從句中的動(dòng)作既可 和主句的動(dòng)作同時(shí)發(fā)生, 又可在主句的動(dòng)作之前 或之后發(fā)生。如： Mary

2、 was having dinner when I saw her . The boy was still sleeping when his mother got home yesterday morning .,while表示“在的時(shí)候”、“在期間”。 它強(qiáng)調(diào)主句的動(dòng)作與從句的動(dòng)作同時(shí)發(fā)生或 主句的動(dòng)作發(fā)生在從句的動(dòng)作過程中。While 從句中必須是表示動(dòng)作或狀態(tài)的延續(xù)性動(dòng)詞。如： The weather was fine while we were in Beijing . She called while I was out. 如果主句的動(dòng)作在從句的動(dòng)作過程中發(fā)生， 從句常用進(jìn)行時(shí)。如

3、: While we were swimming someone stole our clothes . Dont talk so loud while others are working.,總結(jié),1) when可指時(shí)間點(diǎn), 又可指時(shí)間段, 從句中 可用延續(xù)性動(dòng)詞, 也可用非延續(xù)性動(dòng)詞。 2) while總是指一個(gè)時(shí)間段, 從句中必須用延 續(xù)性動(dòng)詞。,1. _ Jennifer was reading a magazine, his sister was listening to the pop music. A. WhileB. When C. What time 2. I was try

4、ing to draw a cat on the board _ the teacher came in. A. whileB. when C. what time 3. My best friend visited my house while I _ dinner in the kitchen. A. cookedB. cooking C. was cooking,練一練,A,B,C,4. When_ the car _? In 1885 （隨州市） A. did; invent B. was; invented C. does; invent D. is; invented 5. Our

5、 teacher wants us to be _whenwe talk with the foreigners. (大連中考真題)A. comfortable B. unusual C. grateful D. confident,B,D,6. Dick gave me a notewhileI _ in the library. I guess he made it to say “sorry” to you. (黃岡市)A. am reading B. was reading C. reads D. will read,B,2. 過去進(jìn)行時(shí),1. 概念: 表示過去某一時(shí)刻或某段時(shí)間內(nèi)正進(jìn)

6、行的動(dòng)作。 2. 構(gòu)成: was/were + 動(dòng)詞現(xiàn)在分詞 3. 用法: a: 表示某一時(shí)刻正進(jìn)行的行為, 與特定的過去時(shí)間狀 語(yǔ)連用,常見的時(shí)間有: at 8 last night, at this time at that time, at that moment 等 e.g. What were you doing at 10 yesterday morning? I was writing a letter to my father at that moment.,b: 表示過去某段時(shí)間內(nèi)正進(jìn)行的動(dòng)作。 e.g. We were building a house last winte

7、r. They were waiting for you yesterday. 否定句和疑問句： e.g. We were not sleeping at home. Was he feeling well?,3.現(xiàn)在分詞的構(gòu)成,1) 一般動(dòng)詞在詞尾加-ing, 如go-going。 2) 以不發(fā)音字母e結(jié)尾的動(dòng)詞, 先去掉e, 再加-ing。 come-comingmake-making write-writing 3) 以重讀閉音節(jié)結(jié)尾的動(dòng)詞, 如果末尾以一個(gè) 輔音字母結(jié)尾, 應(yīng)先雙寫這個(gè)字母, 再加ing， x和w結(jié)尾的除外。 如: get-gettingswim-swimming sh

8、ow-showing,4) 以字母y結(jié)尾的單詞, 直接加ing。 如carrying、playing、studying。 5) 以字母ie結(jié)尾的動(dòng)詞, 變ie為y, 再加ing。 die dying lie lying 6) 以元音字母加e結(jié)尾, 或以e結(jié)尾, 且e發(fā)音的 動(dòng)詞, 直接加- ing。 see-seeingbe-being,4.使用進(jìn)行時(shí)態(tài)的注意事項(xiàng),1)一些動(dòng)詞, 如see、hear、love、like、know、 remember; understand、have等表示感情、 知覺和狀態(tài)的詞, 一般不用于進(jìn)行時(shí)態(tài)。 2) 在there和here引起的句子中, 常用一般現(xiàn)在 時(shí)

9、代替現(xiàn)在進(jìn)行時(shí)。 e.g. Here comes the bus. There goes the bell.,5. 過去進(jìn)行時(shí)和一般過去時(shí)的區(qū)別,1) 過去進(jìn)行時(shí)表示過去正在進(jìn)行的動(dòng)作, 而一般過去時(shí)則表示一個(gè)完整的動(dòng)作。如： They were writing letters to their friends last night. 昨晚他們?cè)趯懶沤o他們的朋友。 (沒有說明信是否寫完) They wrote letters to their friends last night . 他們昨晚寫了信給他們的朋友。 (表達(dá)了他們已寫好的意思, 整個(gè)寫的過程已完成),2) 當(dāng)動(dòng)作延續(xù)較長(zhǎng)時(shí)間時(shí)或表

10、示厭煩、贊美等 感情色彩時(shí), 常用過去進(jìn)行時(shí)表示。如： He was thinking more of others than of himself. 他考慮別人的比考慮自己的多。 (表示說話者贊揚(yáng)的口氣) The boy was always making trouble then . 那時(shí), 他總是惹麻煩。(表示說話者厭煩的口氣),過去進(jìn)行時(shí),含義: 表示過去某個(gè)時(shí)刻 正在進(jìn)行的動(dòng)作。 結(jié)構(gòu)： was/were + doing 例句： I was having an English class at this time yesterday.,現(xiàn)在進(jìn)行時(shí),含義: 表示現(xiàn)在 正在進(jìn)行的動(dòng)作。

11、結(jié)構(gòu)： is/am/are + doing 例句： I am having an English class.,6.,4a. Look at the table and write sentences with both while and when.,e.g. While John was taking photos, Mary bought a drink. John was taking photos when Mary bought a drink.,While John was playing the piano, Mary left the house. John was play

12、ing the piano when Mary left the house.,While John was shopping, Mary took the car to the car wash. John was shopping when took the car to the car wash.,While John was cleaning his room, Mary turned on the radio. John was cleaning his room when Mary turned on the radio.,4b. Fill in the blanks with w

13、as, were, when or while.,At 7:00 a.m., I woke up. _I _making my breakfast, my brother_ listening to the radio. _I was eating, the radio news talked about a car accident near our home. My brother and I went out right away to have a look. _we got to the place of the accident, the car _ in bad shape fr

14、om hitting a tree. But luckily, the driver _fine. The roads _ icy because of the heavy snow from the night before.,While,was,was,While,When,was,was,were,4c. What were you doing at these times last Sunday? Fill in the chart. Then ask your partner.,A: What were you doing at nine oclock last Sunday mor

15、ning? B: I was sleeping. How about you? A: I was doing my homework. B: Youre kidding!,Group work,What were you doing at last Sunday?,A: What were you doing at nine oclock last Sunday? B: I was running. How about you? A: I was reading. B: Youre kidding!,v. 欺騙; 戲弄; 開玩笑,1. What _ (be) you _ (do) when h

16、e arrived? 2. Jim _ (sleep) when I came in. 3.They _ (watch) TV at 8:00 yesterday evening. 4. Now he _ (read) and _(write).,were,doing,was sleeping,were watching,is reading,writing,. 用所給詞的正確形式填空,5. Mother _ (wash) clothes when I _ (get) home from school yesterday afternoon. 6. Look, my sister _ (be)

17、 there in the barber shop. The barber _ (cut) her hair. 7. -When _ you _ (see) the accident? -I _ (see) it fifteen minutes ago.,was washing,got,is,is cutting,did,see,saw,. Translate these sentences.,1. 上課鈴響時(shí), 你在干什么? What _ you _ when the class bell rang? 2. 當(dāng)我媽媽進(jìn)來時(shí)我正在看書. I _ _ when my mother came in

18、. 3. 昨天晚上十點(diǎn)鐘她正在做飯. She _ _ at ten oclock _ _.,were,doing,was reading,was cooking,last night,4.當(dāng)飛機(jī)起飛的時(shí)候, 天正下著大雪。 It _heavily when the plane _. 5. 瞧, 孩子們正在追逐一只小貓。 Look! The children _ a small cat. 6.我女兒正在寫信時(shí), 其他的孩子都在外面玩耍。 My daughter was writing a letter _ the other children _ outside.,took off,were playing,was snowing,are chasing after,while,1. 昨天早上9點(diǎn)鐘你在干什么? 2. 不明飛行物起飛時(shí)，小明正在騎自行車。 3. 那時(shí)，他們正在做家庭作業(yè)。,What were you doing at 9 oclock yesterday morning?,Xiao Ming was riding his bike when the UFO took off.,They were doing their homework at that time.,. 翻譯,4.今早給你打電話的時(shí)候, 你