Unit 12 Life is full of the unexpected.学案（打包6套）

Unit 12 Life is full of the unexpected. Section A (1a—2d) 【学习目标】 1. 能听、说、读、写下列词汇: unexpected，backpack, oversleep-overslept-overslept, ring-rang-rung 2. 能正确使用以下常用表达： by the time, go off, wake up, put on, rush out, give…a lift, at least, be full of 3. 能熟练掌握并使用下列重点句式，谈论如何学习： (1) By the time I got up, my brother had already gotten in the shower. (2) But before I got to the bus stop, the bus had already left. (3) Well, at least by the time you got to school, you were only five minutes late for class. 2·1·c·n·j·y 【重点难点】 重点：熟练运用所学句型谈论过去发生的事情。 难点：能正确使用有when、by the time等引导的时间状语从句表示过去发生的事情。 【新知预习】根据句意及首字母提示完成下列单词。 The result was _____ (出乎意料的) and nobody believed it. I o_____ this morning, because my alarm clock didn’t go off. I left my b_____ on the bus this morning. When the bell _____(响铃), what were you doing? My father often gives me a l_____ to school. 【课堂探究】 1. By the time I got outside, the bus had already left.当我出来的时候，公共汽车已经走了。21*cnjy*com 本句是by the time引导的时间状语从句，从句是I got up，是一般过去时。 主句the bus had already left是过去完成时。过去完成时表示在过去某个时间之前已经发生的动作或一直延续的动作或状态。它表示的动作所发生的时间是“过去的过去”，常用“助动词had+过去分词”构成。常与过去完成时连用的时间状语有：by(the end of)+过去的时间，for+段时间，since+点时间，when引导的时间状语从句(从句中谓语动词用过去时)等。例句： 1）By the end of the match, they had kicked two goals and we had kicked four. 到比赛结束时，他们已踢进两个球，我们进了四个球。” 2）By the time she got up, her brother had already gone into the bathroom. 在她起床之前，她的弟弟已经进了盥洗室。 【针对练习】1) —Why didn’t you go to the movie yesterday? —Because I ____ it before. A. had watched B. have seen C. have watched D. had seen 2) By the end of last year, we _____ about 2000 English words. 【版权所有：21教育】 A. were learning B. have learnt C. learnt D. had learnt 3) Since 2000, Nanchang has become a new city. Everything _____. 21*cnjy*com A. is changed B. was changed C. has changed D. had changed 2. When she got to school, she realized she had left her backpack at home. 当她到学校时，她意识到她把背包忘在家里了。 表示“把某物忘在某处”要用词组leave sth. +place。 例句：I’ve left my umbrella at home.我把伞忘在家里了。 【拓展】forget forget意为“遗忘某物”，指忘记一件具体的东西，但不能有具体的地点。 例句： I forgot my umbrella yesterday .我昨天忘了带伞。 【针对练习】— Boys and girls! Please _____ your compositions after class. — Oh, my God! I _____ it at home. A. hand in, forgot B. hand in, left C. hand out, forgot D. hand out, left 【达标练习】 I. 单项选择。 1. He told me that he _____ his homework at home.21世纪教育网版权所有 A. has forgotten B. had forgotten C. has left D. had left 2. By the time of last year, she _____ the piano for five years. A. learnt B. has learnt C. had learnt D. will learn 3. ... ...