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1、Unit 6Natural disasterGrammarWhat is the girl doing now?She is running now.What was the girl doing just now?She was running just now.What is the boy doing now?He is jumping now.What was the boy doing just now?He was jumping just now.What is the bear doing now?He is skiing nowWhat was the bear doing

2、just nowHe was skiing just now.1.過去進行時主要表示：過去進行時主要表示：在過去某一時刻正在進行的動作在過去某一時刻正在進行的動作 （a）They were eating breakfast at 7:00 am yesterday.（b）I was writing a letter at this time yesterday.（c）Five minutes ago,Danny was looking out of the window and Suzy was reading a book.在過去某一階段一直在進行的動作在過去某一階段一直在進行的動作 （a）

3、From 1983 to 1998,he was teaching at in Beijing.（b）They were building a house last winter.2.過去進行時的句式過去進行時的句式 （1）基本結構：）基本結構：was/were+verb-ing （2）否定式：）否定式：was/were not+verb-ing was not=wasnt were not=werent （3）疑問句：將）疑問句：將 was/were 調到主語前調到主語前 （4）I/he/she/it was+verb-ing you/we/they were+verb-ingWere th

4、ey?Was he.?Were they?Was she.?Was he.?Was it.?at this time yesterdayat 10 a.m.this morningfrom 4 to 5 last Sunday at 8:00 yesterday morning at this time yesterday from 8 to 9 last night A B.Past continuous tense with while and whenWhat was the rabbit doing just now?What was the pig doing just now?He

5、 was jumping just now.He was dancing just now.The rabbit was jumping while the pig was dancing.The worm was eating while the dog was reading.Two long actions went on at the same time.The rabbit was jumping while the pig was dancing.The worm was eating while the dog was reading.While the pig was danc

6、ing,the rabbit was jumping.While the dog was reading,the worm was eating.連詞連詞 while 與過去進行時與過去進行時 當兩個延續(xù)性動詞同時進行時，我們可以在兩個句子當兩個延續(xù)性動詞同時進行時，我們可以在兩個句子中都用過去進行時，并用中都用過去進行時，并用 while 連接。連接。當當 while 用在句首時，兩個句子應用逗號隔開。用在句首時，兩個句子應用逗號隔開。When 和和 while 的區(qū)別的區(qū)別:2.The earthquake started while I was doing some shopping.3

7、.I was trying to find my way out when I suddenly heard some noise above me.1.People were running wildly while pieces of glass and ricks were falling down.當延續(xù)性動作進行的同時也有別的動作發(fā)生當延續(xù)性動作進行的同時也有別的動作發(fā)生,用用when或或while 連接兩動作連接兩動作.延續(xù)性動作用過去進行時而短暫性動作延續(xù)性動作用過去進行時而短暫性動作用過去時用過去時.Conclution:Finish the exercises of page101.2.While Daniel was making a snowball,he fell over.3.Suzy was making a snowman while Kitty was standing beside her.4.Peter was hiding behind the tree when a snowball hit him.5.Andy ran towards Millie while she was taking some photos.