8B-Unit1-Grammar-教學案

1、陸井中學八年級英語教學案 8BUnit 1 Past and present課題：Grammar （第五課時） 日期： 主備: 審核: 班級：_ 姓名：_ 【目標導航】1. 識記動詞的過去分詞形式2. 能夠在語境中正確的使用現(xiàn)在完成時并與一般過去時區(qū)分3. 理解并運用常與現(xiàn)在完成時連用的時間表達方式【課前預習】同學們，課前預習是一個很好的習慣，預習做的好，課上就更加輕松。請預習課本P13-17頁，翻譯下面的詞組，并且在書上將這些短語用藍色筆 劃下來。1.從他出生以來 _ 2.沒有東西吃 _ 3.玩過這個游戲好幾次_ 4.修理過十多輛自行車_ 5.談論有關(guān)北京歷史的展覽 _ 6.在歷史博物館 _

2、7.忘記標題 _ 8.過去一個世紀北京的變換_ 9.最近很忙 _ 10.知道許多關(guān)于北京現(xiàn)在和過去的情況_ 11.決定再去看一次 _ 12.感冒（兩種寫法） _ _ 13.收到她的來信 _ 14.乘飛機旅行 _ 15.這個夏天飛往三亞 _ 16.住在這里時間很短_ 17.在那里呆一整周 _ 18.享受陽光和沙灘 _19.事實上 _ 20.順便說一下 _【教學過程】. Pre-task Ask some questions: How long has Mr Chen lived in Sunshine Town? When did Mr Chen get married? There have

3、been many changes in this town. What has the centre of town become? How does Mr Chen feel from time to time? .While-taskPresent the sentences according to the answers to the questions:He has lived in Sunshine Town since he moved there with his family when he was two years old.It has become a park.As

4、k some more questions: T: Do you remember Eddie? S1: Yes.T: Millie is Eddies master. Eddie was born four years ago. Eddie has lived with Millie since he was born. How many years has he lived with Eddie? S2: For four years.T: Yeah, Eddie has lived with Millie for four years.（板書）Task 1：Let the student

5、s know that the sentences on the board all include the present perfect tense. Tell the students: We use the simple past tense to talk about what happened at a definite time in the past, like “Eddie was born four years ago”. We use the present perfect tense to talk about things that started in the pa

6、st and still have some connection with the present, like Eddie has lived with Millie since he was born. Eddie has lived with Millie for four years.Task 2: We make positive and negative sentences using the present perfect tense like this.subject have/ has+ (not) past participle I/You/We/They have (no

7、t) moved. He/She/It has (not) moved. We form the present perfect tense by adding have or “has” before a past participle. e.g. have/has + seen/ done/ sung/, etc.Task 3：Tell the student how to write the past participle of verbs.1) We add -ed to regular verbs. （板書SeePage14） 2) We form the irregular ver

8、bs differently. We do not add -ed. Ask the students to look at the table of irregular verbs on Page 121. Ask the students to remember the past participle of irregular verbs.Task4：Ask the students to finish the exercise on page 14. Ask them not to forget the verb have/ has. Present the Present perfec

9、t tense briefly. Subject + have/has+ past participleTask 5：Teach the students how to ask and answer questions using the present perfect tense. e.g. Have you arrived? Yes, I have. / No, I havent. Has she left? Yes, she has. / No, she hasnt.（板書）The teacher asks the students some more questions.Task6 C

10、hat time：Millie and Sandy are talking about an exhibition of the history of Beijing. Complete their conversation using the correct forms of the verbs in brackets. 1) Give them several minutes to complete it. 2) Check the answers with the whole class.3) Ask some pairs to act out the conversation . Po

11、st-task 分清一般過去時與現(xiàn)在完成時I cleaned the blackboard half an hour ago （只說明“擦”和其發(fā)生的時間)I have cleaned the blackboard. （說明現(xiàn)在黑板是干凈的）總結(jié): (1) 一般過去時只表示過去的動作或狀態(tài), 和現(xiàn)在不發(fā)生關(guān)系。(強調(diào)動作發(fā)生的時間)現(xiàn)在完成時表示過去發(fā)生的某一動作, 對現(xiàn)在造成的影響,強調(diào)的是現(xiàn)在。(側(cè)重動作的結(jié)果)True or False: The train has arrived just now. _ The train has just arrived. _ She has ret

12、urned from Paris yesterday. _ She has returned from Paris. _總結(jié): (2) 一般過去時常與表示過去的時間狀語連用, 如:yesterday, last year, three days ago, just now,等。 現(xiàn)在完成時不能和表示過去的時間狀語連用,其時間狀語往往是since, for, just, ever, never, before, already, yet , so far等或無時間狀語。 Present some typical time expressions: already 一般用于肯定的陳述句yet 一般

13、用于否定句和疑問句 (否定句中常譯為“還”；疑問句中常譯為“已經(jīng)”。)just 剛（注意與just now的區(qū)別） recently 近來 ever 曾經(jīng)(常用于問句) never 從不up to now till now over/in the past 10 years so far before(句尾且不加時間) eg. Have you visited our city before? do the exercises on page 17 and check the answers. Sum up: What weve learnt today?【知識點輔助】 考點 1：現(xiàn)在完成時的用法和構(gòu)成閱題筆記： 知識點撥助動詞要隨著主語的變化而變化，當主語是第三人稱單數(shù)時，助動詞要用has。 混淆點撥一般過去時只強調(diào)在過去的時間里所做的動作，不表示對現(xiàn)在的影響。 方法點撥判斷是否用現(xiàn)在完成時的幾個要素：1. 強調(diào)動作是過去發(fā)生的2. 強調(diào)對現(xiàn)在的影響或結(jié)果3. 在過去不確定的時間里發(fā)生的動作，但是其結(jié)果對現(xiàn)在有影響。易錯點撥yet與