课时讲练通2017_2018学年高中英语Module4ASocialSurvey_MyNeighbourhoodPeriod3Grammar课件外研版必修1.pptVIP

Module 4 A Social Survey—My Neighbourhood Period 3　Grammar语法专题课 现在完成时 【课前热身】 用所给词的适当形式填写下列教材中的句子并体会 各句中谓语的共同点。 1. It ________(be)six years since we last saw each other. has been 2. This is the first time I ___________(visit)your hometown. 3. You know, I _________(see)quite a lot of China and I ___________(visit)some beautiful cities. 4. They ___________(put up)a lot of high-rise buildings recently. have visited have seen have visited have put up 5. My wife ___ just _______ (buy)a beautiful dress from one of the shops there. 结论: 以上各句中所填部分的时态是___________。 has bought 现在完成时 【课堂诠解】 Ⅰ. 现在完成时的构成 特殊疑问词+一般疑问句(have/has+主语+过去分词+其他) 特殊疑问句 Have/Has+主语+过去分词+其他 一般疑问句 主语+have/has+not+过去分词+其他 否定句 主语+have/has+过去分词+其他 肯定句 have/has+过去分词 基本结构 ①她没有坐火车旅行过。 She ______ _______ on a train. ②(2015·重庆高考)In my hometown, there is always a harvest supper for the farmers after all the wheat ___ ________(cut). hasn’t traveled has been cut ③对画线部分提问。 Mr Wang has worked in the factory since he came to the city. →_____ ____ ___ Mr Wang _______ in the factory? How long has worked Ⅱ. 现在完成时的用法 1. 表示发生在过去并对现在仍然有影响的动作, 常与时间状语yet, lately, just, recently, so far, up to now, till now, ever, never, already等连用。 ①I have just turned off the light. 我刚刚把灯关上。(结果是灯已经被关上了) ②I have already read the book. 我已读过这本书了。(结果是我已知道这本书的内容了) 2. 表示从过去某时开始延续到现在的动作或状态, 常与 时间状语so far, for, since, these days, this year, now等 连用。 ①He ___ ______ in our school for 30 years. 他在我们学校教书已有30年了。 ②I _______ ____ him for three years. 我三年没有看见 他了。 has taught haven’t seen 【名师指津】 　　短暂性动词不能延续, 不能和表示一段时间的状语连用, 需要时要用相应的表示状态的动词替换。 *I have kept/had the new car for a month. 我买这辆新车已经一个月了。(buy为短暂性动词, 不能和表示一段时间的状语for a month连用) Ⅲ. 现在完成时的特殊用法 1. 现在完成时用在时间状语从句或条件状语从句中, 可以表示将来完成, 此时也可用一般现在时。 ①我一做完作业就回家。 I will go home as soon as I _____ / _____ _______ my homework. ②停车之前不能下车。 Don’t get off until the bus _____ / ___ _______. finish have finished stops has stopped 2. 用在特定句型中。 (1)This/It is the first(second, third. . . )time that. . . 句 型中,