2018-2019人教版高中英语必修二课件：Unit 3 Computers（3份打包）

教师用书配套课件 Unit3 Computers电脑 earning about Language 认知·探索 语法精讲透析 现在完成时的被动语态 观察探究 观察并研究下列各句中的黑体部分 OOver time i have been changed quite a lot @ First as a PC and then as a laptop I have been used in offices and homes since the 1970s 3Since the 1970s many new applications have been found for me 、现在完成时的被动语态的四种句式 水(2018·全国卷Ⅲ) Their efforts have been prover fruitful 事实证明他们的努力是卓有成效的。 His novel has not been finished 他的小说还没写完。 Have the new booking systems for tickets been used? 新的订票制度已在使用中了吗? w How long has the battery been used? 电池用了多久了? 归纳》 肯定式主语+have/ has been done 否定式主语+have/ has not been done 般疑问式Have/Has+主语+ been done. 特殊疑问词十have/has+主语 特殊疑问式 been done..? 现在完成时的被动语态的三个用法 1.表示过去发生的动作对现在造成的影响与结果。当 动词为短暂动词时,可与 already或yet连用,但不能与 for或sine引导的表示一段时间的状语连用。 k It is so late that the door has already been locked 太晚了,门已经被锁上了。 o His paper hasnt been handed in yet 他的论文还没有交上来。 2.表示一个被动的动作或状态开始于过去,持续到现 在,并有可能持续下去,常与for或 since引导的时间状语 连用或用于 How long..?句型中。 w His computer has been repaired for two hours 他的电脑已修了两个小时了 *k The valuable book has been kept in the library since it was bought last year 这本有价值的书自从去年买来就保存在这家图书馆里。 三、使用现在完成时的被动语态的四个注意事 项 1.现在完成时的被动语态的两个部分,即have/has和 been,两者缺一不可。 k his puzzle has been worked out 他出的谜已被解出。教师用书配套课件 Unit3 Computers电脑 Using Language 认知·探索 基础自主初探 下面是本部分的重点词汇,你能准确填出内容吗 1.选词填空 download,type,electronic,signal arise, niece, character, appearance (1)A red lamp is often a signal for danger (2)Im unfamiliar with this type of computer (3)Accidents often arise from carelessness (4) The company is britain's main producer of electronic equipment. (5)We should not judge a person by his appearance (6) The boy has a strong character. (7) Nancy is staying with her niece for the moment. ( 8) You can download this software for free 2.短语互译 (1) make good use of好好利用,充分利用 2) be crazy about 对…着迷 (3) give sth away 捐赠,赠送;分发,泄露 (4)in a way 在某种程度上 (5) with the help of 在……的帮助下 (6) deal with 处理;安排;对付 (7)watch over 看守;监视 (8) after all 毕竟 (9) consist of 由……组成 (10)come true 实现 辨析O 指