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1、Module 7 Unit 3 The World Online Period 4 Grammar and usage（2）【学习目标】 1. Learning more about some basic information about auxiliary verbs.2. Summarizing usages of common and important auxiliary verbs.【学法指导】1.Remember the main usages of common and important auxiliary verbs2.Practice makes prefect.Self
2、-education(自主学习): Step 1 Revision and lead-inPoint out the auxiliary verbs in each sentence and underline them.1. He doesnt like English. 2. He is singing. 3. He has got married. 4. He was sent to England. 5. Did you study English before you came here? 6. Do come to the party tomorrow evening. Step2
3、.Team work(合作探究):1. be ( , , , , , , )(1). Lucy is very kind. (2). The small animals are kept in the cages.(3). He is giving a lecture. (4). My homework has been finished.(5). I am to go abroad on business tomorrow. 归纳总结: 1) be作为系动词表示主语性质、状态或客观存在等意思。2)“be +不定式” 表示“ 计划、安排；义务；命令 ”等未来的动作或状态。3)“be +现在分词
4、” 构成各种 时态。 4）“be +过去分词” 构成 语态。5） be用于have/ has/had后构成 时态。2. do ( , )(1). Then, why does he come here? (2). He didnt attend the meeting.(3). You like pop music, dont you? (4). You do know a lot about computers.(5). Never did I see such a strange man. 归纳总结: 1) do作为助动词时的时态、人称和数的变化有 , , 三种形式。2)“do+主语+动词
5、原形” 构成 句。 3) “do+not+动词原形” 构成 句。4) “do(+not)+主语” 用于 问句。 5)“do +动词原形” 用于 强调（加强语气） 。6) “Never (Only) 等+do+主语+动词原形”用于 句3. have( , , )(1). I have never seen such a strange man. (2). Can I have my hair cut now? (3). He often has his assistant help him do it.归纳总结: 1) “have+过去分词”构成 时态; “had+过去分词”构成 时态2)“ha
6、ve+宾语+done”表示使某事情被做或请某人做某事;“have+宾语+do”表示让某人做某事。4. modal verbs(情态动词) ( , should , will , , can , could , may , , must , , dare )(1). Ok, I shall do what you said. (2). Where shall I meet you? 3). You should work harder. (4). Will you give me a cigarette? (5). Often at night she would hear a long low
7、 whistle. (6). I am checking out. Could you give me the bill? (7). I cant help thinking of it. (8). -Must I go with you? -No, you neednt. (9). You mustnt forget your medical card. (10). It must have rained yesterday. (11). You neednt have told me that much.(12). I dare not say it is ugly. (13). How
8、dare you say so? 归纳总结: 1) shall用于第 人称的将来时中，单纯表示将来; 用于第 一 、第三人称疑问句中，表征求对方意见；用于第 二、第 三 人称陈述句中，表“ 允诺，命令，警告，威胁，强制，决心等 ”。should表示 “应该/当”（表义务，责任） 等。2) will用于第 人称疑问句中,表询问对方意愿或向对方提出请求；用于第 二 、第三 人称的将来时中；在现代英语中可用于所有人称,表“ 意志/意愿 ”。would表示过去的 意志，意愿 或过去的 习惯性动作 。3) can, could在口语中相当于may, might,表示许可。 can, could 还可以表
9、示能力, 相当于 。 can, could表示怀疑、推测,一般用于疑问句或否定句。“cant help或couldnt help+动名词”表示“ ”。4) must表示“必须,义务”等,强调主观因素。 need可以对must引导的一般疑问句作否定回答。must的否定式表示“不准，禁止”等意思。“must+have+done”表示对过去情况的推断。“must+do”表示对现在情况的推断。“neednt+have+done”表示过去不必做某事 。5) dare作为情态助动词，一般只能用于 否定 句或 疑问 句中。5. phrasal auxiliary verbs (助动词短语) ( have (
10、got) to , had better , be (not) to, would sooner/rather-than , can not (help) but, be supposed to , ought to , used to , be about to , be able to , be likely to ) (1).Its getting late. Ive (got) to go now. (2).You dont have to take off your shoes. (3).Many countries would rather be cautious with thi
11、s new technology.(4).The tickets had been sold out, so I could not (help) but go back home.(5).The children are supposed to be at school before 8 a.m.(6).I used to play basketball. (7).He didnt use to smoke when he was younger.归纳总结: have to 强调 客观 因素。would rather表示 宁愿做某事 。could not (help) but情不自禁做表示
12、只能做某事 。are supposed to表示 应该/理应做某事 。used to 表示过去常常做某事 。Step 3 Target detection (目标检测):1. -What place is it? -Havent you found we back where we . A. are; had been B. were; had been C. were; have been D. are; were2. We the missing boy in the forest for two hours, but we him yet. A. have been searching
13、for; didnt find B. have searching for; hadnt found C. had searched for; dont find D. have been searching for; havent found3. If city noises from increasing, people shout to be heard even at the dinner table 20 years from now. A. are not kept; will have to B. are not kept; have to C. do not keep; will have to D. do not keep; have to4. -Mike, the phones ringing. Do you want me to go? -No, sit still. . A. I am about to get it B.
