牛津譯林版英語八年級下冊Unit 1 Past and Present 課件(第4課時)(共17張PPT)

1、Unit 1 Past and present第4課時dodiddonebewas/werebeencomecamecomechoosechosechosenPresent perfect tense 現(xiàn)在完成時1含義：(1) 表示過去發(fā)生的事持續(xù)到現(xiàn)在；(2) 表示過去發(fā)生的事情對現(xiàn)在產(chǎn)生影響。eg：Mr Wang has lived here since he came to Anhui. 自王先生來到安徽，他就住在這兒了。 I have lost my mobile phone. 我的手機丟了。2構(gòu)成：have/ has(not)動詞的過去分詞。eg：He has not returne

2、d the book to me yet. 他還沒有把書還給我。 She has never seen this film. 她從沒看過這部電影。(2)規(guī)則動詞的過去分詞的變化規(guī)則3. 動詞的過去分詞構(gòu)詞法示例a.一般直接在詞尾加edworkworkedopenopenedb.以不發(fā)音的字母e結(jié)尾的詞直接加dlivelivedskateskated(1)不規(guī)則動詞的過去分詞需牢記課本上的不規(guī)則動詞表。構(gòu)詞法示例c.以“輔音字母y”結(jié)尾的詞，變y為i，再加studystudiedhurryhurriedd.以“元音字母y”結(jié)尾的詞，直接加edplayplayedstaystayede.以“元音字

3、母一個輔音字母”結(jié)尾的重讀閉音節(jié)詞，先雙寫這個輔音字母，再加edstopstoppedplanplannedpreferpreferred4常用時間狀語：just 剛剛；yet 用于疑問句，表示“已經(jīng)”，用于否定句表“還”；ever 曾經(jīng)；already 用于陳述句，表示“已經(jīng)”，否定句中改為yet；never 用在句中表示否定，從未，從不；recently 近來，最近。eg：Have you found your lost key yet?你已經(jīng)找到你丟失的鑰匙了嗎？I have never heard of this singer before.我以前從未聽說過這個歌手。一、用所給詞的適當(dāng)

4、形式填空1. I _(study) in America for over three years.2. The young man _(live) alone since he graduated from college.(蘭州)3. This is the best film that I _(see) so far.4. Hello. Can I speak to Miss Brown?Sorry, she _( fly) to Canada already. Shell be back in a week.have studiedhas livedhave seenhas flown

5、5. In the past two weeks, the artist _(draw) many pictures about his hometown.6. I _( know) Jimmy for over two days and now we are good friends.7. Why are the windows so dirty?Because we _( not clean) them for a long time.8. My life _( change) a lot in the past few years.(棗莊改編)as drawnhave knownhave

6、nt cleanedhas changed 二、單項選擇9. Dave，we will leave in 10 minutes. Are you ready?No，I_ our guidebook and towels yet.(玉林)A. dont pack B. didnt packC. have packed D. havent packed【點撥】考查現(xiàn)在完成時的用法。根據(jù)No可知還沒有準(zhǔn)備好，排除C；根據(jù)句意“戴夫，我們將在十分鐘后出發(fā)。你準(zhǔn)備好了嗎？沒有，我還我們的旅游指南和毛巾?！笨芍浆F(xiàn)在還沒準(zhǔn)備好，對現(xiàn)在有影響，用現(xiàn)在完成時態(tài)。故選D。D10. The singers _ m

7、any concerts in the countryside since 2001.(湘潭) A. hold B. held C. have held【點撥】語法判定法。 當(dāng)句子的時間狀語為“since 過去的時間點”時，句子用用現(xiàn)在完成時，所以選C。C11. Have you finished your homework? _. Just half of it. How about you？(蘇州) A. Not at all B. Not likely C. Not a bit D. Not yet【點撥】本題用交際法。考查交際用語。根據(jù)答語中“只完成了一半”可知，還沒有完成家庭作業(yè)，故

8、選D。D12. Ann is a nurse in our hospital. She_ here for ten years. A. works B. has worked C. worked D. was workingB【點撥】本題用題眼法。由“for ten years”可知本句為現(xiàn)在完成時。故選B。13. Wow! You _ dinner! Lets eat now.(河北)A. cook B. are cookingC. will cook D. have cooked14. I am surprised at the new look of my hometown，for it _ a lot over the years.(安徽)A. Changed B. changesC. will change D. has changedDD15. You speak English so well._ have you learned English?For 5 years.(