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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 b
2、ear doing just nowHe was skiing just now .1.过去进行时主要表示：过去进行时主要表示： 在过去某一时刻正在进行的动作在过去某一时刻正在进行的动作 （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 . 在过去某一阶段一直在进行的动
3、作在过去某一阶段一直在进行的动作 （a）From 1983 to 1998 , he was teaching at in Beijing. （b）They were building a house last winter .2.过去进行时的句式过去进行时的句式 （1）基本结构：基本结构：was/were + verb-ing （2）否定式：否定式：was/were not + verb-ing was not = wasnt were not = werent （3）疑问句：将疑问句：将 was/were 调到主语前调到主语前 （4）I/he/she/it was + verb-ing y
4、ou/we/they were + verb-ingWere they?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
5、 ?What was the pig doing just now ?He 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 whil
6、e the dog was reading .While the pig was dancing , the rabbit was jumping .While the dog was reading , the worm was eating .连词连词 while 与过去进行时与过去进行时 当两个延续性动词同时进行时，我们可以在两个句子中当两个延续性动词同时进行时，我们可以在两个句子中都用过去进行时，并用都用过去进行时，并用 while 连接。连接。 当当 while 用在句首时，两个句子应用逗号隔开。用在句首时，两个句子应用逗号隔开。 When 和和 while 的区别的区别:2.The
7、 earthquake started while I was doing some shopping.3.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.当当延续性动作进行的同时也有别的动作发生延续性动作进行的同时也有别的动作发生,用用when或或while 连接两动作连接两动作.延续性动作用过去进行时而短暂性动作延续性动作用过去进行时而短暂性动作用过去时用过去时.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.
