Unit 3 Grammar 课件-2023-2024学年牛津译林版英语八年级下册

八下 Unit 3 Online tours Grammar Enjoy a song It's been a long day without you my friend And I'll tell you all about it when I see you again We've come a long way from where we began Oh I'll tell you all about it when I see you again When I see you again Learning aims ： 1.tell the differences between the simple past tense and the present perfect tense. 2.use the simple past tense and the present perfect tense correctly. dream vi.& vt. 做梦，梦想 dream about/of 想象；梦想 e.g. Do you often dream at night? 你在夜里经常做梦吗？ I sometimes dream about my parents. 我有时梦见我的父母。 I dream of becoming a teacher. 我一梦想当个老师。 passport n. 护照 The differences between these two tenses forms 构成 uses 用法 simple past tense 一般过去时 present perfect tense 现在完成时 time markers 时间标志 vs. Tense (时态) Structure (结构) the simple past tense （一般过去时） 肯定句：主语+动词过去式+其他 否定句：主语+didn't+动词原形+其他 一般疑问句：Did+主语+动词原形+其他+？ the present perfect tense （现在完成时） 肯定句：主语+have/has+动词过去分词+其他 否定句：主语+haven't/hasn't+动词过去分词+其他 一般疑问句：Have/Has+主语+动词过去分词+其他+？ forms 构成 Differences between these two tenses 1. 意义上的区别 a. 一般过去时表示过去某个时间发生了某事、存在某种状态或经常发生的动作 与现在没有关系； 现在完成时侧重于强调过去的动作对现在造成的影响 吉姆今天早晨在上学路上丢了钱包。幸运的是，他很快又找到了。 Jim _____ his wallet on his way to school this morning. Luckily, he found it soon. 吉姆的钱包丢了。他很着急。 Jim ___________ ____________ his wallet. He is worried now. 汤姆昨天打破了窗户。老师惩罚了他。 Tom ___________ the window yesterday. The teacher punished him. 汤姆打破了窗户。他得把它修好。 Tom ___________ ___________ the window. He has to repair it. lost has lost broke has broken b. 现在完成时还可以表达某动作或状态从过去一直持续到现在；一般过去时只能说明这件事是过去什么时候发生的，不能表示持续到现在。 西蒙两年前来到了中国。Simon _________ _________ China two years ago. 西蒙在中国已经两年了。 Simon _________ _________ _________ China for two years. c. 现在完成时还可以表达某人做过某事几次了，即表示某种经历，而一般过去时不能。 我叔叔2005年和2010年去过英国。 My uncle __________ __________ England in 2005 and 2010. 我叔叔去过英国两次。 My uncle _________ _______ _________ England __________. came