文稿教案module 4 unit3课件共.pdfVIP

Make a dialog with your classmates like this: A: Hi, … What’s wrong? B: I have a … A: I’m sorry to hear that. You should … B: I think I will. A: I hope … B: Thank you. Sam got sick two days ago. Sam has been sick for two days. Sherry got her driver’s license (执照) in 1999. Sherry has had her driver’s license since( 自从) 1999. Arnold started to y tennis in January. Arnold has yed tennis since January. Maggie moved to Hawaii in 1996. Maggie has lived in Hawaii for about 18 years. Language practice I haven’t done much exercise since I got my computer last year. I have had him for three months now. Since then, it has e part of my life. 7 现在完成时 since 和for 的用法 现在完成时表示动作或状态从过去某一时 刻开始、一直持续到现在，多与 “since +点 时间”或 “for +段时间”连用。for表示 “经 过(一段时间)” ，而since表示 “自从(…… 以 来)” 。 常见结构如下： for +表示一段时间的状语 一段时间+ ago since + 表示过去的某一时间点 从句 来看几个例句吧： He has lived here for 16 years. 他住在这里有十六年了。 He has lived here since 16 years ago. 他从十六年前起就住在这里了。 He has lived here since 1991. 他从1991年起就住在这里了。 He has lived here since he was born. 他从出生起就住在这里。 在对现在完成时的时间状语进行提问时，我 们常用how long. How long have you yed basketball? How long have you been collecting s s? How long has Mary been a teacher? Since two years ago. 介词 for 短语表示一个时间段，指某个动 作或情况到现在为止已持续了多久；since 作 为介词，接一个时间名词，作为连词，引导 一个时间状语从句(从句动词一般是短暂性动 词) ，since 表示 “自…以来”，指某个动作 或情况从过去某一点时间一直持续到现在， 因此，与 for 或since 引出的时间状语连用的 句子(或主语)谓语动词必须是持续性的。 英语中有些动词的意义不能持续，表示的是 一瞬间就结束的动作，这些动词被称为非持续 性动词或短暂性动词，常见的如come, leave, go, lose, see, begin, start, arrive, e, die, buy, borrow, close, join, reach, fall, get up 等。这类 动词可以用于完成时态，但在肯定句中不能与 表示动作延