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江苏省句容市行香中学八年级英语上册UnitNaturaldisastersGrammar新牛津新
Natural disasters 一、教学目标 1.学会正确使用过去进行时 2.学会使用when.while和as 教学重点、难点 正确使用过去进行时以及when.while和as 二、词汇、短语 1 break. v /broken adj/break--broke--broken 2 Terrible可怕的、糟糕的 adj/terribly adv 3 hit 击中 过去式hit 4 fall over跌倒 5 make a snowball/snowman堆雪球/雪人 三、句型(语法) I was sleeping at 10p.m last night. I was sleeping when the earthquake started. People were running in all directions while pieces of glass and bricks were falling down. When/While/As Millie was watching Tv, Andy came into the room Millie was watching TV when Andy came into the room. 【课前导学】 1.写出下列单词的现在分词: Play___________step____________hide____________discuss____________ plan___________wait_____________buy_____________try_____________ run___________shop_____________begin____________sit_____________ search_________mop_____________ 2.复习现在进行时,预习过去进行时的基本构成方法。 【课堂学习】 Step1 Duty report Step2 Look at some pictures to present past continuous tense. Ask students to work out the rules 1、表示过去某一段时间内一直进行的动作。 时间状语: from 8:00to 9:00 last night等,也可由上下文暗示。 2、 表示在过去某个时间点发生的事情。 时间点如:then, at 8 o’clock last night, when I was sleeping等。 What was she doing at nine o’clock yesterday? (介词短语表示时间点) When I saw him ,he was decorating his room. (when从句表示时间点) 3、 通常不能用于过去进行时的动词(见课本P123) 改错: 1.I was knowing the answer._______________________ 4 2.I wasn’t understanding him. _____________________ 4句型:group work 小组讨论,通过例子,总结规则 肯定句:主语+was/were+doing+其它 否定句:主语+was/were+not+doing+其它 一般疑问句:Was/Were+主语+doing+其它? 肯定回答:Yes,主语+was/were.否定回答:No,主语+wasn’t/weren’t. 特殊疑问句:特殊疑问词+was/were+主语+doing+其它? (1) I was reading at this time yesterday. 否定句: 一般疑问句: 肯定回答: 否定回答: 特殊疑问句: (2) They were watching TV when their mother got home. 否定句: 一般疑问句: 肯定回答: 否定回答: 特殊疑问句: Step3 Grammar2 when, while, as 都有“当......的时候”。 1. while指一段时间,它所引导的从句中的谓语动词必须是延续的,不可以是瞬间性的动词,如: While he reached there,They were playing basketball. ( ) While I was waiting for a bus, I met my cousin. ( ) 当强调两个延续性的动作同时发生时,常用“过去进行时+while+过去进行时” e.g. 当他在打电话的时候,我在写信。 I ______ _______ a letter _______ he _______ _______ a phone call. (While he ______ _________ a phone call, I _______ _________ a letter.) 当强调某个动作发生时,另一个动作正在进行,用“一般过去时+while+过去进行时” e.g. 我们正在读书的时候,老师走了进来。 The teacher _______ in __________ we _________ __________. 我妈妈在睡觉的时候,电话铃响了。 While my mother _______ _________, the telephone _________. while的使用特点也可以记忆为:while 后面不接一般过去时(即短暂性动词)。 2. when和as使用范围比while 广泛,它们引导的从句中的谓语动词既可以是延续性的,也可以是短暂性的。换言之,能使用while的句子也可以使用when或as替代,如“一般过去时+while/when/as+过去进行时”、“过去进行时+while/when/as+过去进行时” 都可以。 when和as的特殊之处: when引导的从句中的谓语动词可以在主句的动词之前、之后发生。 When he finished his homework, he played the computer games for a while. (when相当于after,finish先发生) When I got to the park, the gate was closed. (when 相当于before, get to 后发生) When 引导的从句含有突然发生的意思: 我在街上散步,他突然喊我。I ________ ________ in the street when he called me. as可理解为“随着......” 随着日子变短,温度开始下降。 ______ the days are shorter, the ___________ starts to drop. 4 随着时间推移,中国日渐富强。 ______ time goes by, China is getting richer and stronger. Step4 Exercises 【课后拓展】 一、按要求进行句型转换 1. We were having a PE class at four yesterday afternoon.(改为否定句) We _______ ________ a PE class at four yesterday afternoon. 2. I was reviewing my lessons at eight last night. (改为一般疑问句,做肯、否回答,对划线部分提问) _____________________________________________________ ______________________________________________________ ______________________________________________________ 3. He ran in the park .(用at this time yesterday改写) ______________________________________________________ 4. They were playing computer games at nine last night.( 对划线部分提问) _______________________________________________________ 5. I was reading a novel at three yesterday afternoon in the library.( 对划线部分提问) ________________________________________________________. I was doing my homework 6.when it began to snow.(提问) ________ _______ you ________ when it began to snow? 7.He hid under the bed because he was afraid of the lightning. (提问) _______ _______ he ______ under the bed? 二、首字母填空 1. To save the children in the fire, several firemen lost their l_______. 2. –There was a big fire in that shopping mall. Many people hurt their arms and legs. --It sounds t_________. 3. It was snowing h_________. The snow covered here and there quickly. 4. A big snowstorm h______ our city last night. Luckily, no one was hurt. 三、用所给动词的正确形式填空 1. I _____________(play) the computer game at this time yesterday. 2. She _____________(watch) TV on the sofa at eight o’clock last night. 3. Eddie _________________(have) supper at seven o’clock yesterday. 4. We ____________(make) a snowman from 3.00 to 4.00 yesterday afternoon. 5. –I ______________(see) you in the street yesterday, Tom. What _______ you ________(do)? --Oh, I ____________(call) my friend. 1. I _____________(play) the computer game at this time yesterday. 2. She _____________(watch) TV on the sofa at eight o’clock last night. 3. Eddie _________________(have) supper at seven o’clock yesterday. 4. We ____________(make) a snowman from 3.00 to 4.00 yesterday afternoon. 5. –I ______________(see) you in the street yesterday, Tom. What _______ you ________(do)? --Oh, I ____________(call) my friend. 6. While he ____________(knock) at the door, my aunt ____________ (cook). 7. The students _____________ (sing) and ___________ (dance) happily on the playground at that time. 8._______ they______________ (feed) the animals at 5:00 yesterday afternoon? 9. Mrs. Green __________ (not wash) clothes at this time yesterday. 10. Grandpa ____________ (mend) his clock when I ______________(reach) home. 11. As I ____________ (walk) in the park, I _____________(see) some children playing games. 4 12. Jane ______________(wait) for me when I ___________(arrive). 13. _________ he __________(lie) on the ground at nine yesterday evening ? 14. What _______ Jim ___________(write) when the teacher ___________(come) in ? 15. My brother __________(fall) off and _______(hurt) himself while he ___________(ride) his bicycle. 四、根据汉语提示完成句子: 1、他们那时不在打排球。They __________ ____________ volleyball at that time. 2. 当你回来时,他在看电视吗?________ he __________ TV when you came back? 3. 昨天中午他在哪里等你?_________ _________ he _________ for you at noon yesterday ? 4. 当我离开时,他正在做家庭作业。He ___________ ____________ his homework __________ I left. 5. 正当他们扫地的时候,老师进来了。 While they___________ ____________ the floor , the teacher came in. 6.地震开始的时候,很多人正在床上睡觉。 Many people _______ _______ in the bed when the ________ ________. 7.你昨天这个时候在干什么?我在搜索因特网。 _________ ________ _________ _________at this time yesterday? I_________ _________the Internet. 8.老师进来时,学生在小声说话吗?是的。 _____ the students______ softly when the teacher____ ____the classroom? Yes,______ ______. 9.当我看电视的时候,我弟弟在玩电脑游戏。 ______ I _____ ______ TV, my brother_____ _____ computer games. 10.当他们在一家咖啡店闲聊时,突然听到一声像打雷似的巨响。 ______ they _____ ______with each other in a coffee shop, they suddenly _______ a loud noise______ _______. 五、根据首字母提示写出单词,完成短文 There was a big earthquake under the India Ocean Area o 1 December 26th 2004 and it c 2 a large tsunami(海啸). Tsunamis are great sea waves produced especially by an earthquake. That morning my classmates and I went to the seaside and had breakfast when we h 3 a loud noise like bombs. People in the sea ran w 4 to the bank and s 5 , ‘Water is coming!’ Someone told us to run to a higher place. We ran as q 6 as we could. Since we did not know what happened, we were very f 7 . We looked back and saw a t 8 picture. The water waves were so strong that cars were made to fall upside down and the flood w 9 away everything on the seaside . We were safe but the n 10 of victims was over 140,000. People call the day ‘Black Sunday’. 1.__________2.__________3.__________ 4.__________5.__________ 6.__________7.__________8.__________ 9.__________10.__________ 4查看更多