八年下Unit3SectionA学案

1、Unit3 Section A【知识目标】本课的13个单词以及相应的动词短语、介词短语。 A:What were you doing when the UFO arrived ? B:I was standing in front of the library when the UFO arrived. A:What was the boy doing when the UFO landed? B:He was sleeping late. 【重点】过去进行时 was / were + doing sth.【难点】过去进行时时态的熟练运用，when 和while 的用法区别【学习过程】 Ste

2、p1 自主学习1.一个飞碟_2.理发店_3.在盥洗室_4.在卧室_ 5. 在厨房里_ 6.出去_7.一个外星人_ 8.buy(过去式)_9.get(过去式)_ 10.一次不寻常的经历_11. 起飞_12.kid(现在分词)_ Step2 知识梳理（一）过去进行时1.含义：表示过去的某一时刻或某一时间内正在进行或发生的动作。2.构成：was/were +v-ing。3.标志：at that time, this time yesterday, all the evening, from 8:00 to 10:00yesterday, just then, at nine yesterday, w

3、hen等表示明确有具体的时间状语。eg：I was doing my homework at this time yesterday.What was Tom doing at ten yesterday.I was eating dinner when the phone rang.4.具体的句型：(1)肯定句：主语+was/were +v-ing eg： They were having a meeting that time. (2)否定句：主语+was not(wasnt)/were not(werent) +v-ing 上句改写为：They were having a meeting

4、 that time._ (3)一般疑问句式：Was/Were +主语+v-ing？ 肯定回答：Yes，was/were. 否定回答：No，wasnt/werent.Eg：Was she reading a book when the teacher came in?Yes, she was. / No, she wasnt.(二)when与while用法1.when是“当时候”，相当于at that time,既可以表示某一时刻又可以表示某一段时间，所以when引导的时间状语从句动词既可以是延续性的，又可以是非延续性的。when引导的时间状语如果是一般过去时，主句一般用过去进行时。而whil

5、e也意为“当时候”，相当于during the time，表示某一段时间历里的情况，故其引导的时间状语从句中的动词必须是延续性的。eg：While I was watching TV, my mother came back.=When my mother came back, I was watching TV.2.while重在强调其后的动作与助于动作的对比，表示“与此同时”。eg：She was listening to music while I was playing computer games.（三）练习1）_ the teacher came in, we were talki

6、ng and laughing.2)I got home_ my mother was cooking dinner.3)They were dancing _ we came to meet them.4)_the alien was visiting the museum, the boy called the police.Step3 学习 3a部分 1.读课文，写出下列短语和句型。1)一次不寻常的经历 _ 2)大约在十点左右 3) 跟随某人做某事_ 4)它是多么的奇怪！ _ 5)当它走进一家礼品店的时候我感到非常惊讶。_6)太不可思议了。_2.再读短文，回答问题。1）When did

7、the UFO land ? what was the writer doing ?2) What places did the alien go ? what did they do ?3) Did the alien buy any souvenirs in the shop ？ 4) What did the writer do while the alien was in the museum ?【当堂达标】 （一）根据句意及首字母完成单词1.My sister was watching TV w_ she was having supper.2.My mother was cooki

8、ng in the k_ when I got home yesterday.3.My friend b_ me a book as a birthday present last week.4.The plane l_ safely at last.5.I graduated from Shandong University this year. So I have no e_in teaching English. (二) 用所给词的适当形式填空1.What an _(amaze) sight!2.I often see Mrs. Green_(water) flowers in her

9、garden.3.When they came into the room, Jack and Mike _(read) books.4.While I_(sing) an English song, he _(come) in.5.What_ you_(do) at this time yesterday?6.We _(listen) to the radio at 7:00 yesterday evening.(三) 单项填空（ ）1.We heard someome _ in the next room.A. sings B. sang C. to sing D. singing（ ）2

10、.There are many trees _ the classroom.A. in front of B. in the front of C. in front D. at the front（ ）3.His mother wanted to know what he _ at that time.A .is doing B. was doing C. has done D. will do（ ）4.-I was doing my homework at eight oclock last night.-You are_. I saw you in the cinema.A. hard-working B. kidding C. kiding D. kidded（ ）5.They were playing football it rained. A. while B. when