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1、Period Using languageGrammar & Vocabulary Grammar(情态动词二)课前自主预习观察句子，总结规律That is why Letters from Father Christmas could be the perfect book . The children must have been very excited as they opened it. . they might not receive their presents if they were not good.我的发现以上三个句子都使用了情态动词。(1)句中的could表示过去的能力
2、，意为“_”。(2)句中的must表示十分肯定的推测，意为“_”。(3)句中的might表示推测(把握不大)，意为“_”，多用于肯定句和否定句。答案：(1)能够(2)一定；准是(3)可能精讲课时语法一、情态动词can与could的用法1表示能力：can多用于指现在或将来，could多用于指过去。I can play basketball now, but I couldnt when I was young.现在我会打篮球了，但小时候我不会。2表示请求和许可：could语气比can委婉，但回答时只能用can。Can/Could you lend me a hand?你能帮我一下吗？3表示推测，
3、意为“可能”。多用于否定句或疑问句。只是could语气较委婉，含义较不确定。Can he be in the reading room now?No，he cant be in it. Because I saw him in the office just now.他现在可能在阅览室吗？不，他不可能在(阅览室)。因为我刚刚在办公室看见他了。4表示理论上或习惯上的可能性(指一时的可能性)，意为“可能会”。Jogging can be harmful to the health.慢跑可能对身体健康有害。易混辨析can, be able to表示“能力”时的区别can用于指现在，常表示自身具有的能
4、力be able to用于各种时态，表示经过努力后所具有的能力Babies can swim when they were born.婴儿们刚生下来时会游泳。(自身具有的能力)Without his hard work, he was not able_to get good grades.如果没有他的努力工作，他是不可能取得好成绩的。(经过努力)二、情态动词may与might的用法1表示征求对方的许可或允许(不用might)对方做某事。May I come in? Yes, you may/can.我可以进来吗？ 是的，你可以进来。(No, you cant. 不行，你不能进来。)You m
5、ay go now.你现在可以走了。2表示推测(把握不大)，意为“可能”，多用于肯定句和否定句。might比may可能性更小。He may come, or he may_not. 他可能来，也可能不来。It may/might rain this afternoon. Youd better take a raincoat with you.今天下午可能会下雨。你最好带上雨衣。3may用于祈使句，表示祝愿。May you succeed!祝你成功！4“may/might as well动词原形”表示“不妨，还不如”。I may/might_as_well start at once.我还不如
6、马上就动身。三、情态动词must的用法1表示命令或强烈的建议，意为“必须”。All the students must obey the school rules.所有学生必须遵守校规。2表示十分肯定的推测，意为“一定；准是”。 Betty must be in the next room. I can hear her talking there.贝蒂肯定在隔壁房间。我能听见她在那儿讲话。3表示说话人的一种态度，意为“偏要；硬要；偏偏”。Why must he go out in the bad weather?为什么他偏要在这种坏天气出门？4must not表示禁止，意思是“一定不要”“不
7、许”“不准”“不可以”等。You mustnt stop your car in the busy street.你不能把车停在繁忙的路上。5回答must问句时，肯定回答多用must; 否定回答多用neednt或dont have to。Must I finish my homework before eight oclock?Yes, you must.(No, you neednt. 或 you dont_have_to.)我必须要在8点之前完成作业吗？是的，必须。(不，没必要。)请选出下列情态动词在句中的含义1请选出下列句中can/could的含义He cant be in the re
8、ading room. Because I saw him in the office just now. ( )I can speak English fluently while he cant.( )Scotland can be very warm in September.( )Could you please clean this room？( )答案：BADC2请选出下列句中may的含义May you be happy！()I think he may come today.()You may keep the book for 2 weeks.()答案：CBA3请选出下列句中m
9、ust的含义You mustnt fire without my signal.()Why must he play the piano at noon？()She must be tired after such a long walk.()You must practice your spoken English if you want to improve.()答案：DCBA Vocabulary1request n请求，要求vt. (正式或礼貌地)要求；请求(P17)归纳拓展(1)at ones request/at the request of sb. 应某人的要求(2)reques
10、t sth. of/from sb. 向某人请求某物request sb. to do sth. 要求某人做某事request that sb. (should) do sth. 要求某人做某事(从句用虚拟语气)It is requested that . (should) do sth. 据要求The play was written by a famous writer at_the_request_of a famous director.这部剧本是一位著名作家应一位著名导演的要求写的。They requested a loan from/of the bank.他们要求银行给他们一笔贷
11、款。My parents requested_me_to_learn a second foreign language.My parents requested_that I (should)_learn a second foreign language.我父母要求我再学一门外语。It_is_requested_that all members (should) be present at the party.全体成员都被要求出席这次晚会。名师点津request后的宾语从句、表语从句、同位语从句及It is requested that . 从句中的谓语动词用虚拟语气，即“(should)
12、动词原形”。(1)单句语法填空I wrote the report _ the request of my manager.Visitors are requested not _ (touch) the exhibits.It is requested that Miss Yang _ (give) a performance at the party.答案：atto touchgive(2)一句多译他要求我们准时到达。He requested us _ on time.He requested that _ on time.答案：to arrivewe (should) arrive2at
13、tract v. 吸引，引起的兴趣(P18)归纳拓展(1)attract sb. to sb./sth. 引起某人对某人/某物的注意attract ones attention 吸引某人的注意(2)attractive adj. 吸引人的，有吸引力的be attractive to . 对有吸引力的(3)attraction n. 吸引；吸引人的事物；吸引力a tourist attraction 旅游胜地What first attracted_me_to her was her incredible experience of life.她离奇的人生经历最先吸引了我。I tried to
14、attract_his_attention,_but he was still lost in thought.我试图吸引他的注意力，但是他仍然陷入沉思。China is_attractive_to tourists for its beautiful scenery and historic sites.中国的风景名胜和历史古迹对旅游者很有吸引力。Could you recommend some tourist attractions here?你能推荐一些本地的风景区吗？(1)用attract的适当形式填空The tourist _ is so _ that it _ a great many visitors every year.答案：attraction; attractive; attracts(2)单句写作鲜艳的颜色对孩子们很有吸引力。Bright colours _ the children.她吸引我的是她的优雅及魅力。What _ was her grace and charm. 答案：are attractive toattrac
