英語教學(xué)課件系列Naturaldisasters自然災(zāi)害語法Grammar

1、初中英語牛津版8AUnit 6 Natural disastersGrammar一般現(xiàn)在時1）經(jīng)常發(fā)生或反復(fù)發(fā)生的動作。 如 He gets up at six.2）現(xiàn)實的情況或狀態(tài)。 如 It is fine today.3）永恒的真理。 如 The sun rises in the east.回顧所學(xué)過的時態(tài)一般過去時1）過去發(fā)生的動作或存在的狀態(tài)。 如 I went to school on foot.2）剛發(fā)生過的動作。 如 She came in just now.回顧所學(xué)過的時態(tài)現(xiàn)在進(jìn)行時 1）此刻正在進(jìn)行的動作 如 We are having our English class

2、now.2）此階段正在進(jìn)行的動作 如 We are using a new txt book. 一般將來時 如 I am going to/shall/will visit my uncle this weekend.回顧所學(xué)過的時態(tài) 過去進(jìn)行時。 今早7:00我在吃早飯。 I was eating breakfast at 7.00 this morning. 昨晚8:00-10:00他在看電視。 He was watching TV from 8:00 to 10:00 last night.過去進(jìn)行時的基本用法表示過去某一時刻正在進(jìn)行的動作以及過去某一段時間內(nèi)持續(xù)進(jìn)行的動作,常與表示過去

3、的具體時間連用。 如：at that time, at this time yesterday， at 9.00 last night, at that moment 等連用。過去進(jìn)行時的句型轉(zhuǎn)換1)Jim was watching TV from eight to ten last night.2)Jim wasnt watching TV from eight to ten last night.3) -Was Jim watching TV from eight to ten last night? -Yes, he was. /No, he wasnt.4) What was Jim

4、doing from eight to ten last night?Tom was playing football.She was reading a book. What was Tom doing just now?What was Lucy doing at 2:30 p.m. yesterday?They were watching TV from 6 to 8 last night. The twins were thinking. What were they doing from 6 to 8 last night?What were the twins doing at t

5、his time yesterday?Past continuous tensebe (was/were) + verb-ing過去進(jìn)行時過去進(jìn)行時的句式（1）基本結(jié)構(gòu)：was/were + v-ing（2）否定式： was/were not + v-ing was not = wasnt were not = werent（3）疑問句： 將 was/were 調(diào)到主語前1. 表示在過去某個時間點正在發(fā)生的動作.常與 at ten last night, at this time yesterday, at that time/moment, when I came in 等連用.2. 表示在

6、過去某段時間之內(nèi)持續(xù)不斷發(fā)生的動作. 常與last night, this morning, fromto (from7 to 10 this morning)連用. He wrote a letter this morning. He was writing a letter this morning. 區(qū)別: 今天上午他寫了一封信. 今天上午他一直寫信.一、有時為了句子表達(dá)的需要,我們可以用復(fù)合句來表達(dá)過去進(jìn)行時.如: 昨晚當(dāng)我到家的時候,媽媽和爸爸正在看 電視.My parents were watching TV when I arrived home last night.剛才當(dāng)老師

7、走進(jìn)教室的時候,學(xué)生們正在讀書. Students were reading when the teacher came in just now.Note: 在這些句子中,when引導(dǎo)的句子表過去的某一個具體的時間,when從句用一般過去時, 而它的主句用過去進(jìn)行時. 二、但是若強調(diào)某個動作正在進(jìn)行中時,又發(fā)生 了別的動作,用when從句。when從句必用過去 進(jìn)行時,主句用一般過去時。(表示在when從句正進(jìn)行期間又發(fā)生了主句的動作) 此時, when= while,表時間段. 如:當(dāng)學(xué)生們正在讀書時,老師走進(jìn)了教室。 When/While the students were reading

8、, the teacher came into the classroom. 昨晚當(dāng)爸爸和媽媽正在看電視時,我到家了。While my parents were wacthing TV last night, I went home.三、若主, 從句兩個延續(xù)動作同時進(jìn)行,用while, 則主與從句都用進(jìn)行時, 此時,while譯為“而”“一邊,一邊”, 如:1. 他正在讀書而我正在學(xué)習(xí)。 He was reading the newspaper while I was studying.2.貝貝正在唱歌, 而萍萍正在跳舞。 Beibei was singing while Pingping w

9、as dancing.3. 她一邊聽歌一邊做作業(yè)。She was doing her homework while she was listening to music.4.當(dāng)玻璃或磚塊落下來時人們瘋狂的跑了出來。People were running wildly while pieces of glass and bricks were falling down.5. Suzy 正在堆雪人而Kitty 在她旁邊站著看。 Suzy was making a snowman while Kitty was standing beside her.What _ your brother _ (d

10、o) at nine oclock last night?2. They _ (listen) to music at that time.3. When I saw him, he _ (search) the Internet.wasdoingwere listeningwas searchingExercise 14. They _ (discuss) a problem in the meeting room at this time yesterday.5. _ Amy _ (visit) the Science Museum from 9:00 a.m. to 11:00 a.m.

11、 yesterday?were discussingWasvisiting1. My wallet dropped on the ground _ I was running.2. _ I was falling asleep, there was a loud knock on the door.3. _ he was reading, an earthquake started.4. Were the students listening to the teacher carefully _ the teacher was giving a lesson?5. _ the telephone rang, I became nervous.while When While while When Exercise 2過去進(jìn)行時與一般過去時的區(qū)別 過去進(jìn)行時著重