电脑桌面
添加小米粒文库到电脑桌面
安装后可以在桌面快捷访问

高中英语Unit 1 Tales of unexplained-Grammar ppt 课件VIP免费

高中英语Unit 1 Tales of unexplained-Grammar ppt 课件高中英语Unit 1 Tales of unexplained-Grammar ppt 课件高中英语Unit 1 Tales of unexplained-Grammar ppt 课件高中英语Unit 1 Tales of unexplained-Grammar ppt 课件高中英语Unit 1 Tales of unexplained-Grammar ppt 课件
Focus OnePresent perfect tense Go through the passage on Page 2 and underline the sentences using present perfect tense.Key sentences: Police in American have stepped up their search for a fifteen-year-old boy…have/has(not)+past participle•People have shown great interest in his disappearance…•I haven’t seen Justin since. •Some people in Dover also say that they have seen aliens.•Police have not ruled out the possibility that Justin was taken by aliens, but …•…who has taken charge of the case.I didn’t see Justin last Friday night.I don’t see Justin at present.●●last Friday nightpresentI haven’t seen Justin since last Friday night.1. We use the present perfect tense to talk about things that happened in the recent past, but are connected to the present. Eg. The disappearance of Justin has made Kelly very unhappy.2.We also use the present perfect tense to talk about something that started in the past, and is still happening now. Eg.I have not seen Justin since last Friday night.3.We use the present perfect tense to talk about actions that were completed only a short time ago. Eg. The police have just finished searching the area.4.We can also use the present perfect tense for repeated actions.Eg. Some villagers say that they have seen UFOs many times. 5. We use the present perfect tense when the exact time of an action is not clear or important. We use it with time expressions such as:already / yet ; ever / never ; for / since; lately / recently; just for or since?We haven’t seen him for two years.We haven’t seen him since 2003. since+a point in time for + a period of timeEg. I haven’t heard from Tom ______ 2000. We have known each other ______5 years.sinceforalready or...

1、当您付费下载文档后,您只拥有了使用权限,并不意味着购买了版权,文档只能用于自身使用,不得用于其他商业用途(如 [转卖]进行直接盈利或[编辑后售卖]进行间接盈利)。
2、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。
3、如文档内容存在违规,或者侵犯商业秘密、侵犯著作权等,请点击“违规举报”。

碎片内容

高中英语Unit 1 Tales of unexplained-Grammar ppt 课件

您可能关注的文档

确认删除?
VIP
微信客服
  • 扫码咨询
会员Q群
  • 会员专属群点击这里加入QQ群
客服邮箱
回到顶部