八 年級導學案
授課時間： 2012年 3 月 18 日
姓名 班級 審核人簽字
審核日期
課題 Unit3 What were you doing when the UFO arrived? (Section A)第一課時 課型 新授課
執(zhí)筆者 參與者
Ⅰ、Teaching Aims: 1.學習過去進行時的基本結構及典型句型。
What were you doing when the UFO arrived?
2.學會簡單描述過去發(fā)生的事情。
3.學會講簡單的故事。
Ⅱ、Teaching Difficulties:1.while與when的用法。2.學習過去進行時的基本結構及典型句型。
Ⅲ、Teaching key points: 1.while與when的用法。2.學習過去進行時的基本結構及典型句型。
Ⅳ、預習交流：翻譯下列單詞及詞組
1、理發(fā)店 __________________ 2、出去,離開 __________________ 3、 起飛 __________________
4、在圖書館前面 _________________ 5、 睡過頭,起得晚 ________________ 6、做晚餐 ________________
7、理發(fā) __________________ 8、在電話上交談 __________________ 9、制作牛奶奶昔 __________________
10、吃午飯 __________________ 11、浴室__________________ 12、臥室__________________
Ⅴ、知識梳理：
一、過去進行時：表示在過去某一時間內正在進行的動作。
構成：was / were + 現(xiàn)在分詞（其中was是am、is的過去式，were是are的過去式）
e.g. I was doing my homework then . 那時，我正在做作業(yè)。
用法：1）過去進行時表現(xiàn)過去某一時刻正在進行的動作。
e.g. She was writing a letter when I came in .我進來時，她正在寫封信。
2）過去進行時還表示過去某階段正在進行的動作。
e.g. They were waiting for you yesterday .他們昨天一直在等你。
二、過去進行時與一般過去時的區(qū)別:
過去進行時：表示正在進行的動作。
I was reading a novel last night.昨晚我在看小說。（可能還沒有看完）
一般過去時：表示一個完成的動作。
I read a novel last night .昨晚我看了一本小說。（已經看完了）
二、以when和while引導的時間狀語從句
1）延續(xù)性動詞指動作可以延續(xù)一段時間，而不是瞬間結束。如：work,study,drink,eat等。
2）非延續(xù)性動詞指動作極為短暫，瞬間結束。如：start,begin,arrive,jump,go, finish,borrow,knock等。
when表示“當……的時候”。它后面既可跟延續(xù)性動詞，又可跟非延續(xù)性動詞.
如：Mary was having dinner when I saw her .(當我看到瑪麗的時候,她正在吃飯.)
while表示“在……的時候”、“在……期間”。while后面必須是表示動作或狀態(tài)的延續(xù)性動詞。
如：The weather was fine while we were in Beijing .(當我們在北京的時候天氣很好.)
所以, when可指時間點，又可指時間段，從句中可用延續(xù)性動詞，也可用非延續(xù)性動詞。
while總是指一個時間段，從句中必須用延續(xù)性動詞。
Ⅵ、合作探究：
1.小組合作看圖1a ，講故事。談論圖中發(fā)生的故事。
2.小組合作完成1a 。
3.聽力提高，認真聽錄音完成1b, 復述重點句型，理解熟記詞匯句型。
4.小結本節(jié)課學習的過去進行時基本結構及while與when的用法。
Ⅶ、展示分享：
小組運用while與when講述過去發(fā)生的故事，鞏固過去進行時。
Ⅷ、課堂練習：一、單項選擇
（ ）1. Tom was writing a letter ___________ I called him.
A. while B. when C. because D. after
（ ）2. The plane will ___________ in a few minutes.
A. take off B. put off C. take out D. get out
（ ）3. The man followed the boy ___________ what he wanted ___________ in the room.
A. to see, to do B. to see, do C. see, to do D. see, do
（ ）4. The accident happened ___________ the morning of September 12.
A. in B. on C. at D. for
（ ）5. The driver sits ___________ the car.
A. in the front of B. in front of C. in front D. at the front
（ ）6. ___________we got home, it was 10:00.
A. While B. When C. Although D. If
（ ）7. We find ___________ interesting to see English movies.
A. it B. that C. this D. that’s
二、用所給單詞的適當形式填空
1.Mary ofen ______up at six o'clock. But she _______(not get)up at this time yesterday.
2.When I came in, Alice _________(lie)in bed.
3.________(not be) late again. Please get to school on time.
4.The plane__________(take off) a five minutes ago.
5.While the reporter_________(take) a photo, the cat climbed the tree again .
三、用while或when 填空
1.The girl was shopping ________the alien got out.
2.______ the girl was shopping ,the alien got out.
3.I was doing my homework ________my mother came in.
4.______I was doing my homework ,my mother came in.
5.He called to see me _________I was looking for my bag.
6.________we were talking ,Dad got home.
7.________I was sitting in the barber's chair , my friend phoned me.
8.The Greens were having dinner ________ I visited them.
9.What did you do ________ the UFO landed?
10._______I arrived at the airport , the plane was taking off.
Ⅸ、布置作業(yè)
練習冊閱讀理解
Ⅹ、教學反思：