八年级英语下册《Unit 1 Past and Present Grammar》教案 （新版）牛津版

unit unit 1 1 pastpast andand presentgrammar presentgrammar teachingteaching designdesign i i teachingteaching contentscontents grammargrammar unitunit 1 1 8b8b ii ii teachingteaching aims aims by the end of the class the students are able to 1 master the structure and basic usage of the present perfect tense 2 master the rules of forming the past participle of verbs 3 master some expressions of time used in the present perfect tense iii teachingteaching mainmain pointspoints andand difficulties difficulties 1 how to understand adverbs of time and use them with the present perfect tense correctly 2 to understand the differences between the present perfect tense and the simple past tense iv iv teachingteaching preparation preparation ppt ppt a a computercomputer step 1 warming up and leading in 1 listen to an english song i still haven t found what i m looking for 2 simply talk about the song some sentences 3 ask some questions about the part of reading 1 how long has mr chen lived in sunshine town 2 can mr chen see his old friends as often as before why 4 present the answers on the screen 1 he has lived there since he was born 2 no because most of his old friends have moved away 5 ask ss to pay more attention to the underlined parts t explains to let ss understand the structure have has past participle 设计意图 通过有针对性地听英文歌曲和对 reading 部分内容的复习 使学生对 现在完成时有初步的了解 同时也为新课导入做铺垫 step 2 presentation 1 explain the use of the present perfect tense 1 表示动作发生在过去并与现在有联系 we use the present perfect tense to talk about an action that happened in the past and has a connection with the present eg i have written some words on the blackboard already 现在的结果是 字 还在黑板上了 i have just had my breakfast 结果是 现在我不饿 3 表示过去已经开始持续到现在或将来的动作或状态 we use the present perfect tense to talk about an action that started in the past and continues to the present eg i have been a teacher since i left my college 大学 i have been a teacher for about 20 years 现在我还是一位教师 4 表示某事直到现在已经发生了多次 we also use the present perfect tense to talk about how many times an action has happened till now eg i have watched the tv show many times 设计意图 层层深入 中文讲解 英文举例 帮助学生更好地认识现在完成时的句式结构 让学生根据这些句子更好 更加 容易地理解现在完成时 2 practice on ppt 设计意图 通过听说多种形式进行操练 从而让学生对所学内 容得到及时巩固 3 show the following words already yet since ever never just for and recently by ppt 1 already 已经 放在肯定句句中或句末 2 yet 放在疑问句句尾时 表示 已经 放在否定句句尾时 表示 还 没 不 3 ever 曾经 用于疑问句或否定句中 4 never 从来没有 表示否定句中 5 just 刚刚 用于陈述句中 6 recently 近来 用于句末 now tell ss how to use the time expressions above to make sentences 设计意图 通过小组讨论和操练 让学生自己寻找现在完成时中的时间副词 学会 自主学习 step 3 further understand the structure of the present perfect tense 1 ask ss to look at the above sentences on ppt again to find out the structure of the present perfect tense have has past participle 1 present positive statements of the present perfect tense 2 present negative statements of the present perfect tense 3 present yes and no questions of the present perfect tense 设计意图 让学生自觉地认识现在完成时的肯定句式 否定句式和一般疑问句式及 简略回答形式 培养学生自觉学习的良好习惯 2 practice on ppt 设计意图 通过练习 及时巩固学生对现在完成时的的肯定句式 否定句式和一般疑 问句式及简略回答形式的学习 3 explain the form of past participle 大多数过去分词的构成 实义动词原形 后加 ed 但也有部分动词是不规则变化 1 ask ss to read the words on the table on ppt 2 ask ss to finish part b on p14 then check the answers ask ss to finish part c first then ask two ss to read the conversation to check the answers 设计意图 通过多种形式展示动词的过去式和过去分词 尽量使枯燥的词 活 起来 这样既揭发了学生的积极性 又可以帮助学生更持久地记忆相关单词的形式 4 explain the differences between the simple past tense and the present perfect tense 我们用一般过去时谈论过去发生的动作 但当过去发生的动作和现在有联 系有影响时 我们用现在完成时态 step 4 practice 用括号中动词的适当时态形式填空 1 i see the 3d film avatar it s amazing i see it a month ago 2 is your grandfather still alive no he already die when he die he last year die 3 mr li begin to work in this factory in 1990 he work in the factory for 20 years 设计意图 训练学生对过去分词 相关时间状语以及现在完成时的运用 step 5 summary present perfect tense 1 vocabulary yet recently ever just never already 2 structure have has p p 3 the constituent of p p 1 regular verbs 加 ed 加 d 变 y 为 i 加 ed 双写辅音字母加 ed 2 irregular verbs aaa aba abb abc step 6 practice let s try i m sure you can do it well multiple choice 1 you ever with a group yes i have a did study b are studying c were studying d have studied 2 lucy you your ticket not yet a did find b have found c has found d do find 3 my grandmother a lot of changes in tianjin since she came here a sees b can see c will see d has seen 4 my aunt is a writer she more than ten books since 1980 a writes b wrote c has written d will write 5 why won t you go to the movie with me gina because i it twice a see b have seen c saw d will see 5 china develops so fast that s true it a lot already a changes b changed c will change d has changed 6 julia isn t going to the cinema with us because she the film a sees b saw c will see d has seen 7 look at these stamps i them for five years wow they are wonderful a kept b have kept c have bought d keep step 7 homework 1 review the structure and usage of the present perfect tense 2 recite the irregular past participle verbs we ve learne