授課人:郭禮文 時(shí)間: 班級:
一、目標(biāo)再現(xiàn)
1.能夠熟練運(yùn)用所學(xué)知識(shí)來談?wù)?運(yùn)動(dòng)",特別是一些和生活密切相關(guān)的運(yùn)動(dòng)項(xiàng)目。
2.掌握本單元的有關(guān)"water sports"的單詞和短語,能聽、說、讀部分地名,重點(diǎn)掌握 no mater,both…and…,all over等短語或習(xí)慣用語的用法。
3.進(jìn)一步學(xué)習(xí)現(xiàn)在完成時(shí)態(tài),特別注意它與already,just,yet,very等詞的連用,同時(shí)能夠區(qū)別它們的用法。
4.能夠熟練運(yùn)用現(xiàn)在完成時(shí)態(tài),用它來表達(dá)由過去開始,和現(xiàn)在相聯(lián)系的動(dòng)作或影響,能夠區(qū)別一般過去時(shí)與現(xiàn)在完成時(shí)的不同。
5.運(yùn)用本單元所學(xué)知識(shí)來描述某一運(yùn)動(dòng)。如:the Olympic Games或surfing或diving等。
二、重點(diǎn)難點(diǎn)解析
1.What's the surfing like today? 今天沖浪怎么樣?
surf作名詞,意為"拍岸之浪,拍岸浪花";作動(dòng)詞用,意為"沖浪,作沖浪運(yùn)動(dòng)"。surfing是surf的動(dòng)名詞形式,surfer意為"沖浪者,沖浪運(yùn)動(dòng)員"。surfing是一項(xiàng)水上運(yùn)動(dòng),水上運(yùn)動(dòng)的項(xiàng)目還有water-skiing滑水,water polo水球,dive跳水,Swim游泳。
2.Have you ever been to Hawaii? 你去過夏威夷嗎?
have been to. . .意思是"到過,去過",表示曾到過某地,但此時(shí)人已不在那兒了。而have gone to…意思是"去了某地",現(xiàn)在人可能在去的途中或已在那個(gè)地方了,而不在說話人處。例如:
。1)Have you ever been to Hong Kong? 你曾經(jīng)去過香港嗎?
。2)Jim has gone to England. 吉姆去英國了。
(3)Where is Lily? Has she gone to the library? 莉莉在哪兒?她去圖書館了嗎?
3.The beaches there are better than the ones here 中的the ones如何理解和使用?
這里的ones代表前面出現(xiàn)beaches。one用于表示前面同名稱的一類事物。ones表示復(fù)數(shù)概念。例如:
。璈ave you a watch? -Yes, I have a good one.
一你有表嗎?一有,我有一塊好表。
-Have you got any pens? -Yes, I have got many good ones.
一你有鋼筆嗎?一有,我有許多好鋼筆。
注意:在用one(ones)作代詞時(shí),有幾點(diǎn)要慎重:
、傩驍(shù)詞不能用one代替,伴有基數(shù)詞的名詞可用one,ones代替。例如:
As we have finished the first chapter, now we'll read the second.
我們讀完了第一章,現(xiàn)在讀第二章了。
。ú荒軐 the second改為 one)
He has two red pencils and two blue ones.
他有兩支紅鉛筆和兩支藍(lán)鉛筆。
、趇t(them)和one(ones)同是作代詞,代替前面出現(xiàn)的事,但用法不同。
讓用于同名稱的同樣事物;one用于同名稱的另一樣?xùn)|西。例如:
-Have you still the radio set? -No. I have sold it.
一你有收音機(jī)嗎?一沒有,我把它賣了。
(這里的訂是指前面的the radio set,它們是同一個(gè)無線電收音機(jī)。)
-Is this fountain pen yours? -No, it is my sister's. Mine is the one on the table.
一這支自來水鋼筆是你的嗎?一不,它是我姐姐的。我的是桌上那一支。
。ㄟ@里的one不是前面的那支fountain pen,它們不是同一支自來水鋼筆。)
-Do you want the watch? -Yes, I want it.
一你要買那塊表嗎?一想買那塊表。
。ㄍ粔K表,it即:the watch)
-What are pandas like? -I've never seen one, so I don't know what they are like.
一熊貓是什么樣的?一我從來沒見到過,所以不知道熊貓是什么樣子。
(one這里泛指同類事物中的一樣?xùn)|西)
4.I don't know how to surf. 我不知道怎樣沖浪。
how to surf是"疑問詞 + 動(dòng)詞不定式"作賓語。英語中,"疑問詞 +動(dòng)詞不定式"可作一些及物動(dòng)詞的賓語,疑問詞可以是what,which,who,whose等疑問代詞,也可以是when,where,how等疑問副詞。可以用此結(jié)構(gòu)作賓語的動(dòng)詞有:know,decide,find out,tell,forget,remember,see,understand等。這類簡單句往往是由(含特殊疑問句變成的賓語從句的)復(fù)合句轉(zhuǎn)化改寫而成。例如:
(1)She didn't know which blouse to buy. ( = She didn't know which blouse she should buy.) 她不知道該買哪件襯衫。
(2)I'm thinking about what to say. ( = I'm thinking about what I should say. ) 我在考慮說什么。
5.Now it is enjoyed by people all over the world. 現(xiàn)在全世界的人都喜歡這項(xiàng)運(yùn)動(dòng)。
is enjoyed是被動(dòng)語態(tài),by people all over the world 被全世界的人。這一句也可改寫成: People all over the world enjoy it now.
6.It's neither too hot nor too cold all the year round. 全年天氣既不太冷也不太熱。
neither… nor… 既不……也不……,它們可以用來連接相同的兩個(gè)句子成分或詞類。如果連接的是主語,則謂語與第二個(gè)主語保持一致。
例:(1) He isn't a student. I'm not a student.
Neither he nor I am a student.
(2) He doesn't speak French. He doesn't speak Japanese.
He speaks neither French nor Japanese.
Neither…nor的完全肯定形式是:both…and或not only…but also。
但both…and如連接主語,則謂語動(dòng)詞用復(fù)數(shù),not only…but also與第二個(gè)主語保持一致。
例:He likes singing. I like singing, too.
Both he and I like singing. ( = Not only he but also I like singing. )
7. Li Lida, a 12-year-old schoolboy first tried to cross the Qiongzhou Channel in June, 2000.
在2000年6月,一個(gè)12歲的男生李立達(dá)第一次試著橫渡瓊州海峽。
。1)21-year-old在這里可以看作是一個(gè)合成詞,作形容詞用,用來修飾schoolboy。在英語中,"數(shù)字+量詞"構(gòu)成的復(fù)合形容詞,中間要加連字符號(hào),量詞用單數(shù)形式。
例如:100-metre race 一百米賽跑。
two-month holiday兩個(gè)月的假期。
試比較:The boy is five years old.
He s a five-year-old boy.
(2)cross為動(dòng)詞,是"越過、穿過"的意思。意思相近的詞有:through(prep).穿過,指從……(內(nèi)部或空間)中穿行,across(prep).橫過,指從物體的表面由這邊到另一邊。另外,through可作副詞用。
cross與across含義基本相同,但cross是動(dòng)詞。over也可表示"橫過;通過",著重強(qiáng)調(diào)越過某物,從高空中越過。
例:(1)Jack was through with the English test.
杰克通過了這次英語測試。
。2)The old lady crossed the street carefully and slowly.
那老婦人慢慢地、小心地走過街去。
(3)The ship passed through the bridge.
輪船過了橋。(從橋下穿過)
(4)The boy climbed over the wall to get his ball.
那男孩爬過墻去取球。
(5)The blind man walked across the street slowly.
那盲人慢慢地走過街道。
8.His teacher, Mr Feng, spoke highly of his students 中的speak highly of ?
這里的speak highly of是指"高度評價(jià)","贊揚(yáng)"的意思。例如:
The teachers present all spoke highly of his spirits.
在場的老師都稱贊他的精神。
We should speak highly of his saving the girl in the cold water against the risk of his life.
他冒著生命危險(xiǎn),在寒冷的水中救出這個(gè)女孩子,應(yīng)該受到贊頌。
He was spoken highly of by the girl's parents.
他受到了女孩子父母的贊揚(yáng)。
有關(guān)speak的一些詞組:
speak ill of 說……壞話
speak for 充當(dāng)……代言人
speak for oneself 為自己辯護(hù)
speak sb fair 對某人彬彬有禮說話
to speak of 值得一提(常用于否定句中)
9.He is not only the pride of our school but also the pride of all the people in Hainan.
他不僅是我們學(xué)校的驕傲,也是海南全體人民的驕傲。
not only…but also意思是"不僅……而且",應(yīng)連接相同的語法成分。當(dāng)連接主語時(shí),謂語動(dòng)詞采用就近原則,即隨后面的主語而定。例如:
。╨)Not only you but also your father is coming. 不但你,而且你父親也要來。(連接主語)
(2)Jane is not only beautiful but also kind. 珍妮不但漂亮,而且人非常好。(連接表語)
(3)He plays not only the piano but also the violin. 他不僅彈鋼琴,還拉小提琴。(連接賓諾)
(4)They not only sing but also dance. 他們不但唱還跳。(連接謂語)
10.no matter +what/who/which/when/where /how
無論……。No matter這個(gè)詞組可以用來接兩個(gè)分句,不能只用于一個(gè)分句。另外,no matter后面用的是現(xiàn)在時(shí),其含義卻是將來。
No matter what you say, I won't believe you.
無論你說什么,我都不會(huì)相信你。(解釋是沒有用的)
No matter who telephones, say I'm out. 無論誰打電話來,都說我出去了。
No matter when you come, you'll be more than welcome.
無論你什么時(shí)候來,你都會(huì)受到熱烈地歡迎。
No matter how hard you try, you'll never lose your English accent.
無論你怎么努力,你都不會(huì)改掉你的英文口音。
11. none,neither
none一般指三者或三者以上"都不",是代詞all的反義詞。當(dāng)談到兩個(gè)人或兩件事的時(shí)候,不用non,而用nether,意思是"兩者都不",是代詞both的反義詞。none和none of作主語時(shí),謂語動(dòng)詞即可以用單數(shù)形式,也可以用復(fù)數(shù)形式。當(dāng)表示一個(gè)人或物"都不"時(shí),一般用單數(shù)形式;當(dāng)表示所有的人或物"都不"時(shí),一般用復(fù)數(shù)形式。當(dāng)它在非正式的文體中更常用復(fù)數(shù)形式。neither,neither of作主語時(shí),謂語動(dòng)詞一般用單數(shù)形式。但如果是neither…nor…"既不……也不;兩者都不"作主語時(shí),謂語動(dòng)詞根據(jù)nor后面的主語而定(也稱為鄰近原則)。
None of her students are/is here.她的學(xué)生中沒有一個(gè)在這里。
None of those buses go to Tianjin.
那些公共汽車沒有一輛是開到天津去的。
Neither of her parents helps her. 她的父母都不幫助她。
Neither of the two boys is right. 這兩個(gè)男孩沒一個(gè)對。
Neither Tom nor I have been to New York.
湯姆和我都沒去過紐約。
Neither you nor he has come home early. 你和他都未早回家。
12. journey和trip的區(qū)別
。1)journey適用范圍很廣,可指陸路、海程或飛程。但在距離較短時(shí)一般不用這個(gè)詞。
It's over 40-hour journey by train from Beijing to Yunnan.
從北京到云南乘火車需要四十多小時(shí)的路程。
Have a good journey! 祝你旅途愉快!
(2)trip嚴(yán)格說來指"短途旅行",目的可以是公事或娛樂。但在日常用語中也可與 journey互換。
We're planning to make a trip to the Great Wall.
我們正計(jì)劃去長城游覽一次。
三、典型例題解答與分析
1. It was dark, but they went on ______. They never work so late, though they worked late last night. Now they are not working, they are having a rest.
A. work B. to work C. worked D. working
分析與解答:go on doing sth.意為"繼續(xù)做某事",go on to do sth.意為"接著做另外一件事"。根據(jù)題意,本題答案為D。例如:He didn't have a rest but went on running. 他沒有休息而是繼續(xù)跑了。
2. - Who jumps _____in your class?
- Li Ming. He cleared the 1.6 meter ban last week.
A. high B. highest C. the most highly D. tallest
分析與解答 high表示"高的,高地",既可以作形容詞又可以作副詞。highly adv. 表示:"高度的,高尚的"等, think highly of somebody 意思是器重某人,speak highly of somebody意思是"稱贊某人"。在這里表示跳得高,只要用 high就可以,又根據(jù)in the class所以用最高級,選B。tall主要用來表示形容人或物的高低。
3. 根據(jù)句意選擇合適的詞語填空。
1). The important thing is to be good at ______.
We must ______ this problem carefully, (study, learn)
2). When you _______a street, you must walk _______it quickly and not run. (cross, across)
3). During this holiday, I'm going to make a long _______ with my family. (journey, trip)
4). My son is my ________. He can speak English very well.
I'm ______of knowing the football star. (pride, proud)
5). The children have ______made a snowman. They are singing and dancing around it.
The children made a snowman ______. (just, just now)
6). ______ Tom ______ I are happy to be your students.
______ Tom ______ I am good at painting. (both…and…, neither…nor…)
答案
1).learning 此句意思是:重要的事情是要學(xué)會(huì)學(xué)習(xí)。)study(我們必須認(rèn)真研究這個(gè)問題。研究用study。)
2).Cross, across(第一個(gè)空需要一個(gè)動(dòng)詞,而第二個(gè)空由于前面有動(dòng)詞walk所以需要一個(gè)介詞。)
3).journey(長途旅行用journey)
4).pride(意思是我的兒子是我的驕傲。用名詞。)proud(我以認(rèn)識(shí)那位球星為榮。用be proud of句型。)
5).just(第一句是現(xiàn)在完成時(shí)的句子,所以用just表示剛堆完雪人,不強(qiáng)調(diào)具體什么時(shí)間堆,而主要強(qiáng)調(diào)雪人堆完后現(xiàn)在孩子們的心情。)just now(第二句動(dòng)詞用過去時(shí),強(qiáng)調(diào)過去的具體某個(gè)時(shí)間做的這件事。譯文是:孩子們剛才堆的雪人。)
6).both…and…(此句關(guān)鍵詞是are和students。Both…and…做主語時(shí)謂語動(dòng)詞用復(fù)數(shù)形式。)neither…nor…(此句關(guān)鍵詞是am。因?yàn)檫@個(gè)詞組做生語時(shí)謂語動(dòng)詞根據(jù)緊挨著的人稱而定。所以nor后面的主語是I因此動(dòng)詞用am。)
四、習(xí)題精選 初三英語總復(fù)習(xí)單元自查練習(xí)(UNIT 2)疑難解答。(本習(xí)題課前發(fā)給學(xué)生)
Ⅰ.根據(jù)句意和首字母補(bǔ)全單詞。
1. Henry often goes surfing and he is a good s______.
2. Hangzhou is f______ for silk.
3. I think surfing is the most interesting a______ the water sports.
4. I hope that one day surfing will be an event of the O______ Games.
5. We are very p______ of our son.
答案:1. surfer 2. famous 3. among 4. Olympic 5. proud
Ⅱ.根據(jù)句意,找出與句中畫線部分意思相同或相近的選項(xiàng)。
1. I'm not full. I want another two cakes. A. other two B. two more C. two many
2. We have never learned about such a thing. A. listened to B. heard C. heard of
3. The villagers go out for work all the year round.
A. the whole year B. all the year C. whole the year
4. Lei Feng came from a poor family. A. was born in B. born in C. is from D. is born in
5. I met an old friend while I was going home.
A. on my way to home B. to my way home C. on my way home D. on my home way
答案:1. B 2. C 3. A 4. A 5. C
Ⅲ.用所給詞的適當(dāng)形式填空。
1. The waves in Hawaii are _____ in the world. (high)
2. During his study in England, he works in a restaurant as a_____. (wait)
3. I was ______ tonight because I saw an ______ film. (excite).
4. I think Waikiki is one of the best _______for racing boats in Honolulu. (beach )
5. Every morning you can find many people ______ their bikes to workplace. (ride)
6. Every year, water sports attract large numbers of ______(tour) to the islands.
答案:1. the highest 2. waiter 3. excited, exciting 4. beaches 5. riding 6. tourists
Ⅳ. 選擇填空
1. ______ is one of the water sports.
A. Water-ski B. Water-skiing C. Water-sking D. Watering-skiing
2. The film is very ____. Tom is very ____.
A. exciting, excited B. excited, exciting C. exciting, exciting D. excited, excited
3. ____the weather will be like tomorrow, we II go surfing.
A. No matter how B. No matter what's C. No matter what D. No matter if
4. The river near our village is about ____long.
A. three-hundreds-metres B. three-hundred-metre
C. three-hundred-metres D. three hundred metres
5. He has not had a night ____for two weeks, but he still feels ____.
A. off, happy B. away, happily C. off, happily D. away, happy
6. It makes him ____. A. feel angrily B. feel angry C. to feel angry D. feeling angry
7. It's ____good food that we all like it very much. A. so a B. such a C. so D. such
8. When you ____the street, you must look first. A. across B. go cross C. cross D. goes across
9. Look! Mrs. Green is talking ____the students of Class I on the ground.
A. among B. in the middle of C. between D. at
10. Her teacher thinks ____other. A. high B. highly C. well D. good
11. Lei Feng is the ____of all the people in China. A. pride B. proud C. prideful D. proudly
12. -Have you finished your homework______? -No, not______.
A. already, already B. yet, yet C. already, yet D. yet, already
13. Neither you or he ______ Hawaii before.
A. has gone to B. have gone to C. have been to D. has been to
14. Xi'an is very famous ______Terra Cotta Warriors. A. to B. of C. in D. for
15. Bruce has lived here ______last year. A. / B. for C. before D. since
16. Waikiki is one of the best beaches ______ surfing in Honolulu. A. to B. for C. with D. in
17. I've never ______ him before. A. heard of B. hear from C. heard to D. hear of
18. They were very proud______ their daughter. A. for B. of C. with D. about
19. Then he slowed ______ as the wind became stronger and the waves higher.
A. under B. below C .down D .slowly
20. All of us except him _______ to Beijing. A. have gone B. has gone C. have been D. has been
答案:1. B 2. A 3. C 4. D 5. A 6. B 7. D 8. C 9. B 10. B
11. A 12. B 13. D 14. D 15. D 16. B 17. A 18. B 19. C 20. C
Ⅴ.完成句子
1.游泳是夏天最受歡迎的運(yùn)動(dòng)之一。____ is ____ ____ the ____ ____ sports in summer.
2.他找到了一個(gè)晚上在餐館做服務(wù)員的工作。He ____ a job ____ a ____ in a ____ at night.
3.我們中沒一個(gè)到過舊金山。____ of ____ ____ ____ to San Francisco.
4.雖然他很累,他仍繼續(xù)堅(jiān)持工作。____ he was very tired, he still ____ ____ ____.
5.無論你去那兒,都會(huì)看到可口可樂。______ ______where you go, you'll find Coca-Cola.
答案:1.Swimming, one, of, most, popular 2. found, as, waiter, restaurant
3. None, us, has/ have, been 4. Although, went, on, working 5. No, matter
Ⅵ.改寫下列句子。
1. I've never been to the Capital Cinema, ______ _____? (改選擇疑問句)
2. An elephant is a kind of strong and big animal. (就畫線部分提問)
_____ ______ ______ animal is an elephant?
3. We had done that already. (變一般疑問句子) ______ ______ done that ______?
4. Mary won the race. Tom won the race, too. ____ Mary ____ Tom ____ the race.
5. I really don't know how I can mend the bike. I really don't know____ ____ ____ the bike.
6. He isn't a teacher. He isn't a worker. He is _____ a teacher _____ a worker.
答案:1. have, I 2. What, kind, of 3. Have, you, yet
4. Both, and, won 5. how, to, mend 6. neither, nor
Ⅶ. 補(bǔ)全對話,每空一詞。
A: Hello, Are you free this weekend?
B: Nothing ______,why ?
A: Look at the sun and the wave is great. We're going to surf on Bondi Beach. Would you like to ______with us?
B: That's wonderful. But I ____ ____before. And I don't know ____ ____surf at all.
A: Don't be afraid. I'll ______you.
B: Thanks, but is it too hard ______me?
A: Not too hard. You just need ______ ______.
B: I'm sure it will be fun! And maybe I'll become a good surfer.
答案:much, go, haven't surfed, how, to, show, for, more, practice
Ⅷ. 完形填空
Swimming is very popular in summer. People like swimming in summer because water makes them 1 cool. If you like swimming but swim in a 2 place, it may not be safe. These years, more than ten people 3 while they were enjoying themselves in the water and 4 of them were students. But some people are 5 not careful in swimming. They often think they swim so 6 that nothing can happen to them in water. Summer is here again. If you go swimming in summer, don't forget 7 better swimmers have died in water. They died because they were not careful, not because they 8 swim. So don't get into water when you are alone. 9 there is a "No Swimming" sign, don't get into water, 10 . If you remember these, swimming will be safer.
1. A. felt B. to feel C. feeling D. feel 2. A. difficult B. wrong C. right D. small
3. A. have died B. die C. died D. will die 4. A. much B. more C. lot D. most
5. A. still B. already C. yet D. even 6. A. will B. often C. fast D. hard
7. A. what B. who C. which D. that 8. A. needn't B. wouldn't C. couldn't D. musn't
9. A. Because B. If C. Whether D. Though 10. A. also B. nor C. either D. too
答案:1. D 2. B 3.C 4. D 5. A 6. A 7. D 8. C 9. B 10. C
Ⅸ. 閱讀理解
A
Almost everybody likes to play. All over the world men and women, boys and girls enjoy sports. Sports help people to keep healthy. They help people to live happily.
Sports change with the seasons. People play different games in winters and summers. Sailing is fun in warm weather, but skating is good in winter.
Games and sports often grow out of the work people do. The Arabs are famous for their horses and camels. They use them in their work, and they use them in their sports events, too. Hunting and fishing are very good sports-but millions of people hunt and fish for a living.
People from different countries may not be able to understand each other, but after a game on the sports field, they often become good friends. Sports help to train(訓(xùn)練)a person's character(性格). One learns to fight fair and hard, to win without pride and to lose with grace(體面) .
( ) 1 . Which of the following is not true?
A. Sports help people to keep healthy. B. Sports help people to live happily.
C. Sports help to train a person's character. D. Sports can make people become enemies. (敵人)
( ) 2. A The word "enjoy" in the sentence. "All over the world men and women, boys and girls enjoy sports." means ____.
A. dislike B. go in for C. be afraid of D. support
( ) 3. People from different countries often become good friends ____.
A. as soon as they meet B. after they understand
C. after they play a game on the sports field D. before they see each other
( ) 4. Which of the following is true?
A. Lots of people make a living by hunting and fishing. B. People only go hunting in winter.
C. The Arabs are good hunters. D. Hunting and fishing are very good for the people.
( ) 5. The writer tells us ____.
A. one should fight hard but not fair. B. one should fight fair but not hard.
C. one should not become proud when he wins. D. one should not feel happy when he wins.
答案:1. D 2. B 3. C 4. A 5. C
B
Skin-diving is a new sport today. This sport takes you into a wonderful new world. It is like a visit to the moon! When you are under water, it is easy for you to climb big rocks, because you are no longer heavy.
Here, under water, everything is blue and green. During the day, there is enough light. When fish swim nearby, you can catch them with your hands.
When you have tanks of air on your back, you can stay in deep water for a long time. But you must be careful when you dive in deep water.
To catch fish is one of the most interesting parts of this sport. Besides (而且), there are most uses for skin-diving. You can clean ships without taking them out of the water. You can get many things from the deep sea.
Now you see that skin-diving is both useful and interesting.
1. Skin-diving will take you to ______.
A. the moon B. be in danger C. mountains D. the deep sea
2. You can climb the big rocks under water because ______.
A you are stronger B. the fish nearby help you
C. you are not as heavy as on the land D. there is a lot of light
3. Under water, a skin-diver _______in the day- time.
A. can see everything clearly B. can't see anything clearly
C. can see nothing D. can see only fishes
4. With a tank of air on your back, you can ______.
A. catch fish very easily B. stay under water for a long time
C. be in safe place D. have more fun
5. Which of the following sentences is NOT true?
A. Skin-diving is a new sport. B. Skin-diving is like visiting the moon.
C. The only use of skin-diving is to have more fun.
D. Skin-diving is both interesting and useful.
答案:1. D 2. C 3. A 4. B 5. C
Ⅹ.書面表達(dá)
你剛從海南島假回來,享受了陽光,沙灘,沖浪,美食……根據(jù)本單元所學(xué)的內(nèi)容,用英語寫一篇大約50字左右的短文。
五、布置作業(yè)
1、預(yù)習(xí)UNIT 3
2、完成練習(xí):初三英語總復(fù)習(xí)單元自查練習(xí)(UNIT 3)
3、摘錄疑難問題
六、課后反思