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1、Unit 8 Natural disastersPeriod 4 GrammarLearning Aims1. To recognize and use the past continuous tense2. To understand the use of “when” and “while”Learning activitiesActivity one Preview一、写出下列单词划线部分音标、词性和词义。1.discuss _ 2.terrible_ 3.break _ 4.snowball _ 5.snowman _ 6.hit _ 7.project_ 8.guidebook_二、
2、了解下列生词的用法。His car broke down because of the cold weather.break 词性：_ 词义：_过去式：_break down译为_ My bike _ _ yesterday. Can you lend me yours?三、翻译下列短语。1.run wildly _2.search the Internet _3.do a project on natural disasters_4.try to find a map of Tangshan_5.on the side of the road_6.break down_7.because o
3、f the cold weather_8.ring sb._9.fall over_10.hide behind the tree_Activity two Revision 1. 一般现在时.He gets up at six.It is fine today. The sun rises in the east.一般现在时表示：1._2._ 3._时间状语有_2. 一般过去时.I went to school on foot.She came in just now.一般过去时表示_时间状语有_3. 现在进行时We are having our English class now. 现在进
4、行时表示_时间状语有_4. 一般将来时I am going to/shall/will visit my uncle this weekend. 一般将来时表示_时间状语有_Activity three Grammar A: Past continuous tense1. 过去进行时的基本用法(1) I was eating breakfast at 7.00 this morning. (2) Last night from 8:00 to 10:00 he was watching TV. 过去进行时的结构是_，它表示_,常与表示过去的具体时间（段），如：at that time， thi
5、s time yesterday，at 9.00 last night , at that moment, when I came home yesterday ，from7 to 10 this morning等连用。写出下列句子的否定句,一般疑问句及肯定回答和否定回答。(1) I was running.否定句：_疑问句：_肯定回答：_否定回答： _对划线部分提问：_(2) Daniel was talking to Millie. 否定句：_疑问句：_肯定回答：_否定回答： _对划线部分提问：_Activity four PracticeStep 1 Do some exercises.
6、 一、根据要求改写下列句子。1. Eddie was sleeping when it started to rain.（对划线部分提问）_2. He was reading a story at eight last night.（改为否定句）_3. They were playing basketball at that time.（改为一般疑问句）_二、用所给词的正确形式填空。1 What _ you _(do) at this time last week?2 _ you _ (have) classes at eight yesterday morning?3 My mother _
7、 (read) newspaper at that time.4 At 10 oclock this morning, my father _ still _ (sleep) in his room.5 - What were you doing yesterday evening? - I _ (write) the article about wildlife.6 It _ (snow) the whole night yesterday.Step 2 Find the time expressions in the sentences above. Step 3 Finish Part
8、A1 on page 99 and Part A2 on page 100. Activity five Grammar B: Past continuous tense with “while” and “when” Step 1 Free talk1. What was Timmy doing when the earthquake started?2. What were people doing while pieces of glass and bricks were falling down?3. What was Timmy doing when he suddenly hear
9、d some noise above him?Step 2 Read the following sentences and find out the rule1.The earthquake started while I was doing some shopping. People were running wildly while pieces of glass and bricks were falling down. 发生在过去的两个_性动作同时进行，用_连接，主句与从句都用_时。2. While we were having supper, the light went out.
10、He was riding a bike when he fell off and hurt his leg. 当过去的一长一短两个动作同时发生时，既可以用when 也可以用while 来连接两个句子。通常用_连接较短动作，用_连接较长动作。较短动作用_时，较长动作用_时。Activity six PracticeStep 1 Complete the sentences with the right words in the brackets.1He _(made, was making) cakes when I left.2They were cleaning the blackboard _(while, when) the teacher came in.3_(When, While) the old man was looking at the map, the boy
