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natural disasters一 預(yù)習(xí)作業(yè)及預(yù)習(xí)交流a. 檢查學(xué)生預(yù)習(xí)單詞情況(個別讀且糾正集體讀)b.預(yù)習(xí)作業(yè)交流(小組核對集體校對質(zhì)疑交流)用所給動詞的正確形式填空:1. look! some children _ (chat). 2. sorry, i _ (help) the baby tie the shoelace at present. 3. some children _ (chat) this time yesterday. 4. sorry, i _ (help) the baby tie the shoelace at that time. 5. i _ (wash) my face at 6 this morning. 6. she _still _ (lie) in bed this time yesterday. 7. _you _ (watch) tv from seven to nine yesterday evening. 8. -where did you go just now? -to the teachers office. -what were you doing there? -i _ (solve) a math problem with my teacher. it took us a long time to work it out. 9. people_ (run) wildly while pieces of glass and bricks _ ( fall ) down.二 交流展示及點(diǎn)撥提高) a. 當(dāng)兩個延續(xù)(思考舉例)的動作同時發(fā)生,兩個句子都可用過去進(jìn)行時來表示,用while連接,如:1. people _ (run) wildly while pieces of glass and bricks _ (fall) down. 2. yesterday afternoon, while daniel _ _ (work) on the computer, millie _ (stand) beside him.3we _ _ (clap) our hands while the performers _ (march) across the park.b. 當(dāng)一個延續(xù)的動作正在發(fā)生的時候,另外一個瞬間動作發(fā)生了,可用“when”或“while”連接,較長的動詞用過去進(jìn)行時,較短動詞用一般過去時1. hello kitty _ (wave) to the visitors while she _ (dance) to the music. 2. we _ (read) a terrible story when suddenly the lights _ (go) out. 3. the doorbell _ (ring) while we _ (talk) on the phone yesterday. c. 一般過去時與過去進(jìn)行時用法的比較: 一般過去時表示在過去某個時間發(fā)生的動作或存在的狀態(tài),而過去進(jìn)行時則表示在過去某一時刻或某一段時間正在進(jìn)行的動作。如: 1. mary _ a letter to her friend last night. mary昨晚給她的朋友寫了封信。(信寫完了 。) 2. mary _ a letter to her friend last night. mary昨晚一直在給她的朋友寫信。(信不一定寫完。)三 檢測反饋a. 用when/ while 填空 1. _simon arrived, amy was reading. 2. i was reading english _ the teacher came in. 3. _my mother was cooking, the phone rang. 4. mrs. wang was listening to music _ her husband was reading newspapers.b. 用所給動詞的正確形式填空1. millie _(look) for a video about earthquakes when simon _ (see) her in the library yesterday. 2. when i got home last night, mum _ (watch) tv. 3. what _ you _ (do) at 9:00 p.m. last night?c. 翻譯1. 下雪時,我們常常堆雪人。2. 我們到達(dá)公園時,一些人在拍照。3. 王飛今天像往常一樣到校很早4. 當(dāng)時我們在踢球,她們在做游戲。參考答案(學(xué)案)一b 1 are chatting 2 am helping 3 were chatting 4 was helping 5 was washing 6 was; lying 7 were; watching 8 was solving 9.were running, were falling二a 1 were running; were falling 2 was working; was standing 3 were clapping; were marching b 1 waved; was dancing 2 were reading; went 3 rang; were talkingc 1 wrote 2 was writing三a 1 when 2 when 3 while 4 whileb 1 was looking; saw 2 was watching 3 were doingc 1. when it snows, we often make snowmen.2. when we arrived at the park, s
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