牛津译林版八年级英语下册《Past and Present》PPT课件(第4课时)，共18页。Present perfect tense 现在完成时1．含义：(1) 表示过去发生的事持续到现在；(2) 表示过去发生的事情对现在产生影响。eg：Mr Wang has lived here since he came to Anhui.自王先生来到安徽，他就住在这儿了。I have lost my mobile phone. 我的手机丢了。2．构成：have/ has(＋not)＋动词的过去分词。eg：He has not returned the book to me yet.他还没有把书还给我。She has never seen this film.她从没看过这部电影。3. 动词的过去分词a.一般直接在词尾加­edb.以不发音的字母­e结尾的词直接加­dc.以“辅音字母＋­y”结尾的词，变­y为­i，再加d.以“元音字母＋­y”结尾的词，直接加­ede.以“元音字母＋一个辅音字母”结尾的重读闭音节词，先双写这个辅音字母，再加­ed4．常用时间状语：just 刚刚；yet 用于疑问句，表示“已经”，用于否定句表“还”；ever 曾经；already 用于陈述句，表示“已经”，否定句中改为yet；never 用在句中表示否定，从未，从不；recently 近来，最近。一、用所给词的适当形式填空1. I ___________(study) in America for over three years.2. The young man __________(live) alone since he graduated from college.(兰州)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. She'll be back in a week.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.(枣庄改编)二、单项选择9. —Dave，we will leave in 10 minutes. Are you ready?—No，I________ our guidebook and towels yet.(玉林)A. don't pack B. didn't packC. have packed D. haven't packed10. The singers ________ many concerts in the countryside since 2001.(湘潭)A. hold B. held C. have held11. —Have you finished your homework?—________. Just half of it. How about you？(苏州)A. Not at all B. Not likely C. Not a bit D. Not yet12. Ann is a nurse in our hospital. She______ here for ten years.A. works B. has worked C. worked D. was working... ... ...关键词：《Past and Present》PPT课件免费下载，.PPT格式 本作品中主体文字及图片可替换修改，文字修改可直接点击文本框进行编辑，图片更改可选中图片后单击鼠标右键选择更换图片，也可根据自身需求增加和删除作品中的内容，源文件无水印。如认为该内容涉嫌侵权，可通过邮件提出书面通知，我们将及时处理。