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2019-2020年九年級英語全冊 Unit 6 When was it invented Period 4教學(xué)案 （新版）人教新目標版 課題名 主備人 課時 Period 4(Section A Grammar Focus-4c) 學(xué)習(xí)目標 1) 學(xué)習(xí)掌握下列詞匯：fridge, low, somebody, translate, lock, earthquake, sudden, all of a sudden, biscuit, cookie, instrument 2）進行一步復(fù)習(xí)鞏固學(xué)習(xí)Section A 部分所學(xué)的生詞和詞組。 3）進一步學(xué)習(xí)運用一般過去時態(tài)的被動語態(tài)。 4) 掌握主動語態(tài)變被動語態(tài)的方法，并通過不同方式的練習(xí)，來熟練運用。 學(xué)習(xí)重點 1) 學(xué)習(xí)生詞fridge, low, somebody, translate, lock, earthquake, sudden, all of a sudden, biscuit, cookie, instrument 2) 復(fù)習(xí)鞏固Section A 部分所學(xué)的生詞和詞組，達到熟練運用的目標。 學(xué)習(xí)難點 1) 一般過去時態(tài)的句子變?yōu)楸粍诱Z態(tài)。 2) 綜合運用所學(xué)的知識進行練習(xí)運用。 教學(xué)步驟 教學(xué)過程 二次備課 I.溫故知新 Show some pictures of some inventions and ask the students to have a free talk about some inventions. What do you think is the most helpful invention? When was it invented?Who was it invented by? II.興趣導(dǎo)入 Work in pairs. Look at 1b. Student A cover the dates. Student B, ask student A when the things in the picture were invented. Then change roles and practice again. 2. Ask students to make similar dialogues using the things around them. III.感受新知 1.Ask the students to make a list of five helpful inventions and five annoying inventions on their own, move around the room to offer help as needed. 2. Let the students who would like to share their answers to read to the class. IV.梳理鞏固 Practice Work on 4a: 1. Tell Ss to read the sentences in 4a and rewrite the sentences using the passive voice. 2. 認真閱讀每個句子，根據(jù)上下文確定空格處應(yīng)填的意思。 3. 逐句進行分析推敲，然后分析句子的時態(tài)及語態(tài)，用適當(dāng)?shù)男问教羁铡? 4. 最后，通讀一遍所有句子，進行綜合理解，看句子的意思是否通順，合理。 5. Check the answers with the Ss. Work on 4c: Decide whether active or passive forms should be used in these sentences. Write the correct forms in the blanks. 1. 先通讀小短文，了解大意。 2. 逐句分析每一句話的意思，確定句子主語和謂語動詞之間主動或被動關(guān)系。 3. 結(jié)合句子的時態(tài)，填上正確的形式。 4. 復(fù)讀短文，看是否通順。 5. Check the answers V.拓展探究 主動語態(tài)變被動語態(tài)應(yīng)注意的問題 1. 有些短語動詞相當(dāng)于及物動詞，變?yōu)楸粍泳鋾r介詞或副詞不能去掉。 2. 含有雙賓語的主動句變?yōu)楸粍泳鋾r，通常把指“人”的間接賓語變?yōu)橹髡Z，指“物”的直接賓語保留不變；如果把指物”的直接賓語變?yōu)橹髡Z，則在間接賓語前加to或for。 An e-dictionary was given to me yesterday. 3. 主動句中感官動詞see/hear/watch/feel等和使役動詞make/let/have等后跟省略to 的動詞不定式，變?yōu)楸粍诱Z態(tài)時應(yīng)加上不定式符號to。 I saw a heavy man enter the house. A heavy man was seen to enter the house. 4. 系動詞、不及物動詞或某些短語動詞（happen, take place, e true, fall asleep…）沒有被動語態(tài)。 What happened to Mr. Brown? 布朗先生發(fā)生了什么事？ 課堂檢測 補全下列主動句變被動句。 1. Jenny put her clothes in the suitcase last night. Her clothes____ ____ in the suitcase last night. 2. The twins sang an English song that day. An English song ____ _____ ___ by the twins that day. 3. Did they build a bridge here a year ago? ____ a bridge ____ here by them a year ago? 4. They sold out the light green dresses yesterday. The light green dresses ____ _____ _____ out. 教學(xué)反思