Unit 8 Natural disasters- Grammar 课件2024-2025学年牛津译林版八年级英语上册

Unit8 Natural disasters 1 2 Describe the pictures using the sentences from The Taiwan Earthquake. 1. Timmy____________ when the earthquake started. Revision 2. People ____________ in all directions while pieces of glass and bricks________________. was sleeping were running were falling down 时态：过去进行时 2 He _________________. is playing football What is Tom doing now? What are they doing now? 现在进行时：am/is/are + doing Lead-in They _________________. are reading books 现在进行时：现在正在发生的事情 He ___________________. was playing football What was Tom doing yesterday? What were they doing yesterday? Tom They ___________________. were reading books 过去进行时：was/were + doing 过去进行时：过去正在发生的事情 过去进行时 1. 在过去__________正在进行的动作 They were eating breakfast at 7:00 yesterday. 某一时刻 2. 在过去__________一直在进行的动作 From 1983 to 1998, he was teaching at Peking University. 某段时间 过去进行时的定义 表示过去的时间: this morning, the whole morning, all day, from nine to ten, last evening, at that time, at this time yesterday, at 9 last night, at that moment 。 或者在when, while, as引导的时间状语从句中使用。 过去进行时的基本用法 P123 5 She was dancing last night. 过去进行时的否定 What was she doing last night? She was ____ swiming last night. not He was reading newspaper yesterday morning. What was he doing yesterday mornig? He was____climbing yesterday morning. not 过去进行时的否定 They were playing basketball yesterday. What were they doing yesterday? They were ____ singing yesterday. not 否定：was/were +not+ doing 过去进行时的否定 Was she reading at that time? 过去进行时的一般疑问句 She was reading at that time. Yes, she was. No, she wasn’t. Yes, they were. Were they learning English yesterday? They were learning English yesterday. No, they weren’t. 过去进行时的一般疑问句 过去进行时的句式 1）基本结构：was/were + v-ing 2）否定式： was/were not + v-ing was not = wasn’t were not = weren’t 3）一般疑问句： Was/Were+主语+V-ing? 4）特殊疑问句： Wh-+was/ were +主语+V-ing? Summary: I was (not) sleeping at 10 p.m. last night. You/We/ They were (not) He/She/It was (not) 陈述句（肯定+否定） Summary: 一般疑问句及肯定否定回答 Was I sleeping at 10 p.m. last night? Were you/we/they Was he/she/it Yes, I was. you/we/they were. he/she/ it was. No, I wasn’t. you/we/they weren’t. he/she/it wasn’t. 单击此处编辑母版文本样式 第二级 第三级 第四级 第五级 answer come borrow run begin change buy celebrate chat cut keep drink carry think write practise win shop exercise dance swim lie see ing ing ing ing ing ing ing ing ing ing ing ing ing ning ning ning ting ting ming ping ying ing 变化规则: 1. 大多数动词直接加ing 2. 以不发音的e结尾的动词，去e加ing 3. 重读闭音节要双写结尾的辅音字母加ing 4. ie结尾的要把ie改为y加ing 动词的现在分词：v-ing ing was reading were doing was having was walking was ringing Finish PartA: A snowstorm hit Sunshine Town Were waiting 2. 过去进行时: 着重描述当时正在进行的动作，动作未完成，强调过程； 一般过去时与过去进行时的区别 1. 一般过去时: 表示一个已经完成的动作，表示动作发生过且已结束，强调结果。 今天上午他写了一封信。 今天上午他一直在写信。 前者写信动作已结束，后者表示一直在写且还未写完。 He wrote a letter this morning. He was writing a letter this morning. 注意：下列几类动词通常不用于进行时。 ① 表示状态的动词be； ② 感官动词：feel，hear，sound，look，smell，taste，等； ③ 表示思维或心理状态的动词： believe, forget，consider(认为)， know，remember，hope，wish，want等； ④ 表示所属关系的动词： belong，have，own，hold（容纳）等。 B. Using while, when and as While, when, as 的使用 1 2 I was sleeping when the earthquake started. 时间连词：When, while, as People were running in all directions while pieces of glass and bricks were falling down. 3 As I was trying to find my way out, I suddenly heard some noise above me. when, while和as均有“当…时候”的意思，这三个连词都可引导时间状语从句。 思考： 1. 主句从句谓语动词时态有什么注意的？ 2. 从句中when/as/while能随便用吗？ 18 思考： 1. 主句从句谓语动词时态有什么注意的？ 19 1 2 I was sleeping when the earthquake started. People were running in all directions while pieces of glass and bricks were falling down. 3 As I was trying to find my way out, I suddenly heard some noise above me. 主句从句谓语动词时态问题 延时性动作/长动作 瞬时性动作/短动作 延时性动作/长动作 延时性动作/长动作 延时性动作/长动作 瞬时性动作/短动作 2.长动作用过去进行时，短动作用一般过去时 1.主句从句都用过去时 20 思考： 2. 从句中when/as/while能随便用吗？怎么选？ 21 1. 只选While: 2 People were running in all directions while pieces of glass and bricks were falling down. 长动作 长动作 eg. While I was watching TV, he was listening to music. Millie was reading a book while Eddie was sleeping. 主长从长 While 过去进行时 过去进行时 当两个长动作同时正在进行时 22 1 I was sleeping when the earthquake started. 3 As I was trying to find my way out, I suddenly heard some noise above me. As I was sleeping, the earthquake started. I was trying to find...when I suddenly heard some... when/as的位置： 当一个长动作正在进行时，一个短动作发生了 短动作 长动作 短动作 长动作 主句从句前后位置变了 23 1 I was sleeping when the earthquake started. 长动作 2. 选When: 短动作 主长从短 一般用when(突然) Lucy was reading English when Lily came into her room. 过去进行时 一般过去时 当一个长动作正在进行时，一个短动作发生了 24 3 As I was trying to find my way out, I suddenly heard some noise above me. 短动作 when/while 3. 选When/while/as都可: 长动作 从长主短 when/while/as都可 When/while/as Millie was watching TV, Andy came into the room. It began to rain when/while/as Linda was having supper. 过去进行时 一般过去时 当一个长动作正在进行时，一个短动作发生了。 25 when和as既可以指某一点时间，也可以指某一段时间，其从句谓语动词表示的动作既可以是瞬间性的，也可以是延续性的； while指一段时间，从句中的谓语动词必须是延续性的。 即：指一点时间时，只能用when或as，不能用while； 指一段时间时，when，while和as都可用。 试比较： When/As he woke up, it was eight o'clock. ( ✔) While he woke up, it was eight o'clock. ( × ) When/While/As I was waiting for a bus,I met her. ( ✔ ) *看时间点/时间段:P123 *看时间点/时间段 1 2 I was sleeping when the earthquake started. People were running in all directions while pieces of glass and bricks were falling down. 3 As I was trying to find my way out, I suddenly heard some noise above me. 短动作 长动作 长动作 某一时间点 某一时间段 某一时间段 when/as 指某一点时间或某一段时间 while 指某一段时间 27 当主句从句动作同时进行，从句动作的时间概念淡化，而主要表示主句发生的背景或条件时，只能用as. “随着”“一边······,一边······” As time goes by, China is getting richer and stronger. 4. 只选as: When arrived was getting While were building was taking fell when/while/as was making was hiding when When/While/As were playing hit ran Finish PartB Thank you! $$