Unit 51. can 的用法 （）表邀请。 若接受邀请，回答为： OK./All right./Sure./ Of course./Certainly./ Yes(Sure),Id love(like) to.若不接受邀请，回答为： Sorry,cant.(+原因)eg . Can you come to the party? Yes/Sure,Id love/like to. Sorry,Icant. I have to help my parents.其他表邀请的句型:1) Could /Will/Would you come to the party?2) Would you like /love to come to the party?3) I hope you come to the party.4) Please come to the party.5) How/What about coming to the party?（）表能力“ 能，会” 否定句 cant 不能 eg. He can swim, but I cant.（）在否定句，疑问句中表示“不可能” 或“一定不” eg. Can he come ? No,he cant come. 2. 情态动词“have to”与其他的情态动词如：“can” , “may” “must”和 “should” 不同。（1）这 4 个情态动词没有人称和数的变化,而 have to 有。它的第三人称单数为“has to” ,过去时为 had to, 如 He should study hard . 他应该好好学习。He has to study hard . 他不得不好好学习。（2）这 4 个情态动词在一般疑问句中将它们放在句首, 在否定句中直接在他们后边加not 即可。我们以 can 为例: Can he go with us ? 他能和我们一起去吗？He cant go with us . 他不能和我们一起去。而“have to”要加助动词 do ,has to 要加助动词 does ,还原 have tohad to 要加助动词 did,还原 have to 才可3. Thats too bad .太遗憾了。表示遗憾或同情。4. Maybe another time . 也许换个时间吧。 或 Maybe next time . 也许下一次吧5. another/the other/others/the others1) another another + n.(单数) 三者中或无范围的另一个eg. This coat is too big. Please show me another one.2) the other one,the other 一个是,另一个是 .,表示两者中的另一个eg. I have two pens . One is black, the other is red.6.have to 强调客观上需要做某事，即表示外界条件的需要不得不做某事，含有“ 客观所迫”的意味，它有人称和数的变化，可用于多种时态中，否定式为“不必” 。 must 强调说话者主观上认为必须做某事，含有“主观判断”的意味，它的否定式意为“禁止，不允许 ”。eg. If one gets ill,hell have to see a doctor.She has to go to school by bus. We must go to school on time.-Must I finish the homework now ?-Yes, you must./No,you neednt(dont have to).You mustnt play football in the classroom.7. I have to help my parents . 我不得不帮助我的父母。 help sb. with sth .或 help sb (to) do sth .上一句我们可以说： I have to help my parents with the housework .或说 I have to help my parents (to) do the housework .8. the day after tomorrow 后天yesterday 昨天the day before yesterday 前天 two days ago 两天前the year before last 前年after three weeks =three weeks later 三个星期后 in two years 过两年9. 问“日期”的句型有： Whats the date today? 今天是几号？ 或 What date is it today?“日期”的表示法有例如 ：11 月 5 号 Its November 5; 读做 November the 5th10. 询问几号星期几的句型:Whats today? 今天几号,星期几? Its Monday, the 28th. 今天是 28 号,星期一。11. fish 的用法: (1) v. 捕鱼, 钓鱼 go fishing (2) n.un. 鱼肉 There is some fish on the plate.c n. 1)一条一条的鱼 eg. one fish 一条鱼 ten fish 十条鱼2) 鱼的种类 eg. many kinds of fishes12. house,family,home 的用法：house 住宅,指居住的房屋,强调住所。 eg. His house is near a market. family 家,家庭 ,家里的人。不是指住房和处所， 而强调家里的人。eg. My family is a big one.（指家） My family are watching TV.（指家里人）home 家。指一家人 共同生活的地方，强调家的环境和氛围，具有感情色彩。eg. I leave home at seven every morning.I was born in Dazu, but now I look on Shuangqiao as my home.（把.当作.）练习题一根据提示完成句子。1. Thanks for your i to visit next Monday.2. Can you come o to my house to j our music club?3. He is d the science report with his classmates.4. He has piano l every Friday.5. They are having a football m .6. Can they go to the c . 二、选择词填空1. Thank you for (ask/ asking), but I cant go to the movies with you.2. Paul has to study (at/ for) the math test tonight.3. My mother has too (much/ many) homework to do.4. Can you come to my party (at/ on) Saturday night?5. She invites me (watch/ to watch) the basketball match the day after tomorrow.6. I like playing (piano/ the piano).三、选择题1. Can you play tennis with on Saturday ?A: us B: we C: our D: ours2. Henry his homework this afternoon.A: have to do B: have to doing C: has to do D: has to doing3. Tony is playing tennis the school team.A: on B: in C: to D: with4. Jim play soccer with his friend this weekend, because he is very busy.A: can B: cans C: cannt D: cant5. - ? -Its October the 14th.A: When is today B: whats today C: What time is today D: What day is today6. He is with his father the whole day.A: fish B: fishes C: to fish D: fishing7. Can you come to my party? - .A: Sure, I love B: Sure, I love to C: Sure, Id love to D: Sure, Id love.四、按要求转换句型。1. Hes playing tennis on Sunday afternoon.(对划线部分提问）_ _ _ _ on Sunday afternoon?2. The movie begins at six oclock.(对划线部分提问）_ _ _ the movie ?3. Mary can come to the party.(改为否定句）Mary come to the party.4. He has to study.(改为一般疑问句）_ he to study?5. Can you go to the mall this week?(做出肯定回答）Sure, _ _ _.五