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

unit 1 past and present grammari. teaching aims and learning objectivesby the end of the lesson, students should be able to:1. use the present perfect tense to make positive statements;2. use the present perfect tense to make negative statements;3. use the present perfect tense to ask and answer questions;4. form the past participles of regular and irregular verbs.ii. teaching contentsnew words and phrases: yet, recently, past, over the past centuryiii. focus of the lesson and predicted area of difficulty1. use the present perfect tense correctly.2. form the past participles of regular and irregular verbs.iv. teaching proceduresstep 1 lead-in1. free talk t: what do you know about mr chen and sunshine town?【设计意图：通过口头交流，考察学生对reading板块的掌握程度，同时引出本课时学习内容。】step 2 presentation 1. structure of the present perfect tensesb + have/has + done 2. when to use the present perfect tense(1) we use the present perfect tense to talk about an action that started in the past and continues to the present. (2) we use the present perfect tense to talk about an action that happened in the past and has a connection with the present. (3) we also use the present perfect tense to talk about how many times an action has happened till now.3. matching exerciset: here are six sentences in the present perfect tense. match the reasons for using the tense on the right with the sentences.4. work out the rule(1) present some positive statements in the present perfect tense and ask students to work out the rule. he has just gone home. she has already had a holiday this year. it has broken! i have seen my new english teacher. they have bought a new car. you have finished the exercise. we have seen this film before.we use “have + done” with pronouns like _, _, _ and _. we use “has + done” with pronouns like _, _ and _.(2) present some negative statements in the present perfect tense and ask students to work out the rule. sb + havent/have not + done hasnt/has not(3) present some yes/no questions in the present perfect tense and ask students to work out the rule. have/has + sb + done(4) present some wh- questions in the present perfect tense and ask students to work out the rule. wh-words + have/has + sb + done4. time expressionst: we can use these time expressions with the present perfect tense: already, yet, ever, never, just, recently, since and for.t: complete the following passages and sentences with the correct forms of the verbs in the brackets. pay attention to the time expressions.5. pair work t: work in pairs and talk about recent activities. use the conversation on the screen as a model.6. competition t: form the past participles of the following verbs. lets see which team is the fastest. t: try to work out the rule of form the past participles of regular verbs. try to remember the past participles of irregular verbs. 【设计意图：让学生直观感知现在完成时，引导学生从感知过渡到理解、归纳和运用，让他们在语境中逐步理解和掌握现在完成时的结构、功能及意义。】step 3 practice 1. difference between the simple past tense and the present perfect tenset: work in pairs and discuss the difference between the simple past tense and the present perfect tense.t: lets try to finish two short passages. please underline the correct verbs.2. finish part c 3. pair work t: suppose you did some cleaning after school today. work in pairs and talk about what your classmates have done. use the sentence pattern like this: what have/has . done today?4. writingt: lets watch a video about changes in tianjin and then write a report. you should use at least five sentences in t