Unit3 Online tours Grammar课件2023-2024学年牛津译林版八年级英语下册

牛津译林版八年级英语下册 Unit3 Online tours Grammar 1. To understand the differences between the simple past tense and the present perfect tense. 2. To grasp the expressions with the present perfect tense. 3. To grasp the expressions with the simple past tense. 4. To understand different uses of the present perfect tense. Learning targets 完成句子。 1. 北京因万里长城而著名。 Beijing _____________ the Great Wall. 2. 这条河是个钓鱼的好地方。 This river is a _______________ fishing. 3. 我三天前听说过这件事。 I _________ this _______________. 4.自从2000年起，他就在上海工作了。 He __________ in Shanghai ______ 2000. is famous for good place to go heard of three days ago has worked since Revision Great works are performed not by strength but by perseverance 1.Who designed ‘Around the world in eight hours’? It is designed by Nancy Jackson. 2.What is the main character called? He is called Itchy Feet. 3.In what color are the places you have visited marked? They are marked in bright purple. Revision 区 别： 结 构 Daniel didn’t go to Beijing two years ago. Daniel hasn’t lived in Beijing for two years. 否定句 助动词不同 时间不同 动词形式不同 Great works are performed not by strength but by perseverance 区 别： 结 构 一般疑问句 Did Daniel go to Beijing？ Has Daniel lived in Beijing？ 助动词不同 动词形式不同 Great works are performed not by strength but by perseverance Differences between the simple past tense and the present perfect tense (一般过去时态和现在完成时态的区别) Tense (时态) Concept (概念) the simple past tense （一般过去时） 表示过去某时发生的动作或单纯叙述过去的事情，强调动作；过去某时发生的动作，和现在 ______（有/没有）关系。 the present perfect tense （现在完成时） 持续到现在的动作或状态；强调过去的事情对现在的影响;到目前为止，动作发生的次数；过去发生的某一动作对现在造成的结果或产生的影响，强调和现在 _____（有/没有）关系。 没有 有 Great works are performed not by strength but by perseverance 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/h