1、 2018 学年度人教版选修 8Period4GrammarPresent Perfect Continuous Tense 教案设计Teaching goals 教学目标1. Target language 目标语言:Grammar: Present Perfect Continuous Tense2. Ability goals 能力目标Enable the students to use the Present Perfect Continuous tense.3. Learning ability goals 学能目标Help the students lean how to use
2、the Present Perfect Continuous tense.Teaching important & difficult points 教学重难点How to use the Present Perfect Continuous tense.Teaching methods 教学方法Explanation and practiceTeaching aids 教具准备A computer and a projector, a blackboardTeaching procedures & ways 教学过程与方法Step I Revision Check the students
3、homework and let one read their work.Step II Lead-inAsk the Ss to point out the sentences that contain the structure as “We have been excavating here for many years” in the text.Step III Explanation一、结构形式现在完成进行时是由“助动词 have(has) + been+动词的现在分词” 构成。二、基本用法1. 表示从过去某时开始一直延续到说话时还在进行,或可能还要继续下去的动作。它通常和“for+
4、段时间” 或“since+点时间(也可以是从句)”的时间状语连用。例如:I have been waiting for a letter from my parents. 我 一 直 在 等 我 父母 的 来 信 。It has been raining for three hours. 雨 已 经 下 了 三 个 小 时 了 。We have been studying here since 2004. 自从 2004 年 以 来 , 我 们 一 直 在 这 里 学 习 。2. 表示从过去某时开始,一直延续到说话时刻,可能刚刚结束的动作。例如:She has been sweeping th
5、e street all day. She is too tired. 她一整天都在扫大街。她太累了。We have been waiting for you for two hours. We dont want to wait any longer. 我们 已 经 等 你 两 个 小 时 了 。 不 想 再 等 了 。三、常用句型1. 肯定句:“主语+have(has) been+动词的现在分词+ 其他.”例如:I have been sitting here all the afternoon. 我 在 这 儿 坐 了 一 下 午 。He has been collecting all
6、kinds of stamps since he was ten years old. 自十 岁 起 他 就 开 始 收 集 各 式 各 样 的 邮 票 。2. 否定句:“主语+have(has) not been+动词的现在分词+其他.”例如:They havent been meeting each other for five years. 他 们 有 五 年 没 见 面 了 。He hasnt been teaching here these years. 这 些 年 他 并 没 有 一 直 在 这儿 教 书 。3. 一 般 疑 问 句 : “Have(Has) + 主 语 + bee
7、n + 动 词 的 现 在 分 词 ? ”其 肯定 回 答 : “Yes, 主 语 + have(has).”否 定 回 答 : “No, 主 语 + havent (hasnt).” 【 例 如 】 : Have you been studying for the English test today? 你今天一直在准备英语测试吗? Yes, I have. / No, I havent. 是的。 / 不,我没有。 Has Daniel been skating for two years? 丹尼尔滑冰已经有两年了吗? Yes, he has. / No, he hasnt. 是的。/ 不,
8、他没有。4. 特 殊 疑 问 句 : “ 特 殊 疑 问 词 + 一 般 疑 问 句 ? ”【 例 如 】 :What book have you been reading recently? 最近你在看什么书?How has your uncle been getting on with his work? 你 叔 叔 的 工 作 进 展 得 怎 么 样 ?四、注意事项有些不能用现在进行时的动词,如 be, have, like, love, know, see, hear 等,同样也不能用现在完成进行时,而应用现在完成时。例如:The poor woman has been ill for
9、 a long time. 那可怜的妇人已经病了好久了。Have you seen her parents these days? 这些天你看见她的父母了吗?时态对比1. 现在完成进行时与现在进行时比较:现在完成进行时强调某一动作从过去一直延续到现在;而现在进行时只指目前正在发生的动作。试比较:Susan has been reading that storybook since last night. 从昨 晚 开 始 苏 珊 就 一 直 在 看 那 本 故 事 书 。Susan is reading a storybook now. 苏珊正在看一本故事书。2. 现在完成进行时和现在完成时比
10、较:有 些 动 词 (如 : work, study, live, teach 等 )用 现 在 完 成 进 行 时 与 现 在完 成 时 表 达 的 意 思 差 不 多 。 试 比 较 :The teacher has been teaching at this school for ten years. 十年 来 , 那 位 老 师 一 直 在 这 所 学 校 教 书 。The teacher has taught at this school for ten years. 那位 老 师 在 这 所 学 校 已 经 教 了 十 年 书 了 。英语中的多数动词在这两种时态中表示不同的含义。现
11、在完成时如果不带表示一段时间的状语,就只能表示动作的完成,而现在完成进行时则表示动作的延续。试比较:They have built a new lab. 他们建造了一幢新的实验室。(表示动作的完成)They have been building a new lab (these years). 他们(这几年) 一直在建造一幢新的实验室。(无论用时间状语还是不用时间状语,都表示动作的延续)Step IV Practice (Using Structures in Workbook)一、单项选择。1. How long have you been here?A. stood B. to stand
12、C. standing D. stands2. The student has been the novel since he finished school.A. wrote B. writingC. written D. writes3. Hi, David! Are you tired? Yes, I am tired. I the classrooms for 4 hours.A. am cleaning B. was cleaningC. have been cleaning D. had cleaned4. Where have you been? We you everywher
13、e.A. have been looking forB. has looked forC. had looked forD. has been looking for5. It for nearly a week. Will it last long? No, its reported that well have a fine weekend.A. have rained B. has been rainingC. rains D. rained二、句型转换。1. He has been watching the interesting play for two hours. (改为否定句)
14、He watching the interesting play for two hours.2. I have been learning English for two years. (改为一般疑问句并作否定回答) you learning English for two years? No, I .3. My brother has been collecting stamps for five years. (对划线部分提问)has your brother been for five years?4. The boy has been listening to the music videos since he was eight years old. (对 划 线 部 分 提 问 )has the boy been listening to the music videos?5. She has been working in the hospital for six years. (对划线部分提问)she been working for six years? Step V HomeworkAsk the students finish Exercise in Word Study Part.