Unit 4 Grammar课件2023-2024学年沪教牛津版英语七年级下册

七年级下册 English Save the trees Unit 4 英语(牛津版) Grammar Lead in What is happening in the Amazon rainforest now? What are the local people doing in the Amazon rainforest? They are burning the forest to farm. What is the result? The forest is destroyed. Almost a fifth of human carbon emissions are coming from this. Tom, what are you doing now? What are they doing now? 1 课堂导入 I am reading a book. They are playing basketball. Look and say. Using the structure “be +Ving” What is the boy doing now? What are the children doing now? He is studying hard. They are having classes. Look and say. Using the structure “be +Ving” What is the girl doing now? What are the boy doing now? She is playing the piano. They are playing football. Look and say. Using the structure “be +Ving” What is the girls doing now? What is the girl doing now? They are practising singing. She is watching TV. Look and say. Using the structure “be +Ving” We use the present continuous tense to show that something is happening now. The present continuous tense The children are playing in the park. We also use the present continuous tense to talk about temporary situations. We are staying at Peter’s house at the moment. 2 课堂活动 1. 表示说话时正在进行的动作。 2. 表示目前阶段正在进行的动作。(但说话时不一定在进行) 1. 现在进行时的定义 ( The present continuous tense) ①现在进行时态表示现在(说话瞬间)正在进行 或发生的动作。如: The students are listening to the teacher. He is watching TV now. ②现在进行时态还可以表示当前一段时间内的 活动或现阶段正在发生的事情。如: We are working on a farm these days. I am writing a book this month. Read P49 and work out the rules 现在进行时的构成 肯定句 主语 + be(is/am/are)+ doing 否定句 主语 + be(is/am/are)+ not + doing 一般疑问句 be(is/am/are)+ 主语 + doing 特殊疑问句 特殊疑问词+be(is/am/are)+主语 + doing We form the- questions form of the main verb like this: Main verb -ing form Example Most verbs + ing Feel feeling Verbs ending in –e e + ing Write writing Verbs ending in –ie ie + ying Die dying Some verbs ending in a vowel letter + a consonant letter double the consonant letter + ing Run running 现在分词的构成方式 主要动词 现在分词 例子 大多数动词 +i