牛津英語8A unit8 復(fù)習(xí)

《牛津英語8A unit8 復(fù)習(xí)》由會(huì)員分享，可在線閱讀，更多相關(guān)《牛津英語8A unit8 復(fù)習(xí)（12頁珍藏版）》請?jiān)谘b配圖網(wǎng)上搜索。

1、 養(yǎng)習(xí)慣·樹態(tài)度 學(xué)生作業(yè) 學(xué)生姓名： 袁千淳 授課教師： 單青青 班主任： 陳靜 科目： 英語 上課時(shí)間： 2015 年 2 月 7 日 13；30 時(shí)— 15:00 時(shí) 跟蹤上次授課情況 上次授課回顧 ○ 完全掌握 ○ 基本掌握 ○ 部分掌握 ○ 沒有掌握 作業(yè)完成情況 ○ 全部完成 ○ 基本完成 ○ 部分完成 ○ 沒有完成 本次授課內(nèi)

2、容 授課標(biāo)題 U7U8復(fù)習(xí) 學(xué)習(xí)目標(biāo) 掌握重點(diǎn)知識(shí) 重點(diǎn)難點(diǎn) 授課內(nèi)容 一． 重點(diǎn)短語 Welcome to the unit 1.bring sb sth / bring sth to sb把某物帶給某人 bring me my clothes 把我的衣服拿來 2.I bet you’ll look cool and feel cool with nothing on.我打賭你什么都不穿會(huì)看起來酷而且覺得涼快(betted) 3.It’s the best time to play football outside. 這是在外面踢足球最好的時(shí)候 R

3、eading 4.A be full of B = A be filled with B A充滿B、A里全是B；A被B填滿 5.forget to grow忘記生長 6.forget /remember to do sth 忘記/記得要做某事（未做） forget/remember doing sth 忘記/記得做過某事（已做） 7.fly far away飛往遠(yuǎn)方(fly—flew) The birds fly far away to find a warm and sunny day. 為了找到溫暖而晴朗的日子，鳥兒飛向遠(yuǎn)方 8.play among flowers

4、在花叢中嬉戲 9.hide from the April showers躲避四月的陣雨 10.sweet memories of summer days夏日甜蜜的回憶 11.what a perfect time to fly a kite ! 真是放風(fēng)箏的好時(shí)節(jié) 12.lazy afternoon慵懶的下午 13.by a pool 在池塘邊 14.autumn leaves( leaf) 秋天的落葉 15.turn brown/ red變成褐色 /紅色 16.fall into piles upon the ground落地成堆（fall—fell） fall on

5、 the ground落在地上 17.harvest crops收割莊稼 Farmers work to harvest crops as the days are shorter and the temperature drops.(a little/a lot/much) 隨著白天更短，氣溫下降，農(nóng)民們忙著收獲莊稼。 18.the snowy season下雪的季節(jié) 19.once again再度，又一次 20.rhyme with…與…押韻 21.Most of them fly away to a warm and windy place. 他們中的大多數(shù)飛到溫暖的有風(fēng)

6、的地方 22.How do people feel on a hot summer afternoon? 在一個(gè)炎熱的夏日下午人們感覺如何？ 23.The leaves turn green and the temperature rises quickly. 樹葉變綠，溫度迅速上升 24.In winter, white snow covers the whole earth. 在冬天，白雪覆蓋了整個(gè)地球/地面。 25.A windy day is perfect for flying a kite. 有風(fēng)的日子是最適合放風(fēng)箏 26.have sweet memories of

7、summer days 有夏日甜蜜的回憶 27.play by quiet streams or under the shade of trees 在安靜的小溪邊或樹蔭下玩耍 28.Farmer are busy harvesting crops. 農(nóng)民正忙于收割莊稼 29.be busy doing sth. = be busy with sth. 忙于做某事 Grammar and Integrated skills 30. Hobo built Eddie a tent with sticks at the beach yesterday. =Hobo built a

8、tent for Eddie with sticks at 31.the beach yesterday.昨天 Hobo用棍子在沙灘為Eddie搭了帳篷。 31.Mum was making breakfast for me when I woke up this morning. 今天早上當(dāng)我醒來媽媽正在給我做早飯。 32.The clouds became dark. 天變得烏云密布 33.Luckily, it didn’t rain. / Unluckily, it rained heavily.幸運(yùn)的是天沒下雨/不幸的是，天下大雨了 34.from morning til

9、l night 從早到晚 35.kick the ball / the can 踢球 / 踢易拉罐 I saw some kids kicking the ball in the park. 我看見一些孩子正在公園踢球。 see sb doing sth 看見某人正在做某事 36.on rainy/snowy days在下雨天/下雪天 37.have/catch a cold感冒have/catch a bad cold重感冒 38.have a high fever發(fā)高燒 39.cough a lot咳嗽厲害 40.an awful day糟糕的一天 41.in the

10、late afternoon在傍晚時(shí)分 42.drop/fall below zero降到零度以下 drop/fall to minus ten degrees/ten degrees below zero下降到零下十度 43.The temperature will drop below zero, to -10℃. 溫度會(huì)降到零度以下, 到-10℃。 44.turn more cloudy變得更加烏云密布 45.around nine degrees = about nine degrees 9度左右 46.The temperature will be in the th

11、irties. 氣溫將在30多度 47.Sb is in one’s thirtieth某人是30多歲 48.the rest of……的其余部分 49.the rest of the water is … / the rest of my books are … 剩余的水 / 書是 50.the lowest/ highest temperature最低氣溫/最高氣溫 51.stay above zero保持在零度以上 52.during this time of year在每年的這個(gè)時(shí)候 53.a bit cold=a little cold有一點(diǎn)冷 a bit of

12、 water=a little water有一點(diǎn)水 54.How's the weather in Nanjing?=What's the weather like in Nanjing? 南京的天氣怎么樣？ 55.The wind is blowing hard./heavily = There is hard/heavy wind 風(fēng)刮的很大 56.Take care當(dāng)心,保重 57.It rained /snowed heavily last night.= There was a heavy rain /snow last night. 昨天晚上下了大雨/雪 58.

13、It will be snowy tomorrow. = It will snow tomorrow.= There will be snow tomorrow. 明天將會(huì)下雪 Study skills and Task 59.cover… with…用…遮住… cover their face with scarves 用圍巾遮住臉 60.The high temperature makes people sleepy in the afternoon. 下午高溫使人昏昏欲睡。 make… +形容詞 使… 怎樣 make sb sleepy使某人昏昏欲睡make me st

14、rong 使我強(qiáng)壯 61.The sudden heavy rain causes a lot of problems. 突如其來的大雨引發(fā)了很多的問題。 62.the best season of the year一年中最好的季節(jié) 63.have a short trip around the city環(huán)城短途旅行 64.(have）snowball fights（打）雪球仗 65.heavy fog大霧 strong wind 大風(fēng) heavy rain 大雨 heavy snow 大雪 Heavy fog is not healthy for people. 大

15、霧有害于人的健康。 66.be covered in deep white snow被厚厚的白雪覆蓋 be covered with sth被覆蓋… 67.be frozen 結(jié)冰的（形容詞） （freeze 動(dòng)詞結(jié)冰–froze—frozen ） 68.It is exciting to have big snowball fights. 打大雪仗非常的令人刺激。 It is +形容詞+( for sb) to do sth. （對某人來說）做某事怎樣 69.throw snowballs at each other相互扔雪球 We throw snowballs

16、 at each other，screaming and laughing. 我們互相扔雪球,叫著，笑著。 70.screaming and laughing 是現(xiàn)在分詞短語，在句子中作伴隨狀語。如： The girl ran into her room, crying. 女孩哭著跑進(jìn)她的房間。 Liu Tao came in, singing a pop song. 劉濤進(jìn)來,唱著流行歌曲。（劉濤唱著流行歌曲進(jìn)來。） 71.make snowmen堆雪人 72.use carrots for their noses用胡蘿卜做它們的鼻子 use sth to d

17、o / for doing、for sth 用……做某事、作為…… 73.everywhere = here and there 到處 單項(xiàng)選擇 ( )1.---_______weather! Shall we go to the park? ---_______. Let’s go. A. What a fine; Sounds great B. What fine; Sounds great C. What a fine; You’re right D. What fine; You are right (

18、 )2. I don’t like this kind of music. It always makes me feel_______. A. excited B. happy C. relaxed D. bored ( )3. The book isn’t _____. It is a book of ________. A. Millie’s; mine B. Millie’s ; our C. Millie; me D.Millie; ours ( )4. I hope you

19、_______ good results in the exam. A. to get B. can get C. getting D. got ( )5. We hold ______party last Saturday. _______ party was _______ lots of fun. A. a; The; a B. the; The; a C. a; The ; / D. a ;The ;the ( )6. ----If it ________ sunny tomo

20、rrow, I ______ fishing in South Lake. ---- It’s a good idea. Can I join you? A. is; go B. will be; go C. is; will go D. will be; will go ( )7. Don’t worry. There is ______ time left. A. a little B. little C. a few D. few ( )8. Your shoes under the b

21、ed ________ bad. Put them in the sun, please. A. smell terribly B. are smelt terribly C. smell terrible D. are smelt terrible ( )9. There are few ______ in the fridge. Let’s go to buy some carrots and cabbages. A. fruit B. meat C. vegetables D. drinks ( )10.

22、 Do you need more people ______ you______ the vegetables. A. help; water B. to help; water C. help; to water D. to help; watering ( )11. The giant panda weighs just ______ when it is _______. A. 10-kilogram; 10-month-old B. 10-kilograms; 10-month-old C. 10-kilogram; 10 month

23、s old D. 10 kilograms;10 months old ( )12.She is an _____ girl. She always speaks to others _______. A. polite, politely B. impolite, rudely C.impolite, politely D.polite, impolitely ( )13. He is too old to run_______ to catch the bus. A. fast enough B. fastly enough C

24、. enough fast D.enough ；quickly ( )14. -----Let me introduce myself. I’m Ron. ------ _______. A. Is that so? B. Really? C. I’m so pleased. D. Glad to meet you. ( )15. -----Do you mind my opening the window? -----_______. It’s too cold outside. A. Never mind

25、 B. Not at all C. You’d better not D. Sure 詞匯運(yùn)用 1. Amy is feeling much __________ (ill) than before after taking the medicine. 2.Without the guide’s help, the travelers couldn’t find the way back by _____________ (they). 3. We had a great time ___________(fly) kites in the park last S

26、unday. 4. Our modern times need more and more ____________(hero) for us to learn from. 5. John studies in a ___________ (Britain) secondary school. 6. I walked slowly around the lake to enjoy the ___________ (beautiful) of the sunset. 7. It was cold and cloudy at the _________ (begin) of the day

27、. 8. _____________ (sad), it’s difficult for giant pandas to survive in the wild. 9. We should encourage farmers __________ (leave) the nature reserves. 10. Tim has the ___________ (little ) milk of us three. 11. They got the first place, so they were the ___________ (win) of the match. 12. The

28、y agreed ___________ (have) a Chinese lesson every week. 13.This piece of music is ___________ (popular). Few people like listening to it. 14. –How often do you have PE lessons ? –__________ (two) a week. 15. It was a ___________ (please) farm with gardens of green trees and thick grass. U8Im

29、portant phrases and sentences: 1. disaster n. 災(zāi)難；不幸，禍患 natural disasters 自然災(zāi)害 2. mop vt. 用拖把擦干凈 （mopped mopping） up adv 完全地 mop up / eat up /clean up /use up mop up 拖干，把......拖干 (mop it /them up)eg. Hobo wants Eddie to mop up all the water. 3. earthquake n. 地震

30、 an earthquake in the earthquake eg. There was an earthquake in Sichuan in 2008. 4. 1)thousands of 成千上萬的 /hundreds of 成百上千的 / millions of 成百萬的 +名詞復(fù)數(shù) eg. Thousands of people lost their lives in the earthquake.There are thousands of people on the road. 2)數(shù)詞+hundred/thousand/million+名詞復(fù)數(shù)There are t

31、hree thousand students in our school. 5. accident n. 事故，意外的事 eg. There was a car accident yesterday.昨天有一場交通事故。 A car accident killed three men three days ago. Three men lost their lives in the car accident three days ago. 在三天前的一場交通事故中三人喪生。 6. coach n. 長途汽車(coaches) get on/off the coach

32、It took us three hours to go to Nanjing by coach. . 7. crash vi. & vt. 猛撞；碰撞 crash into 猛撞，碰撞 eg. A car crashed into a tree last night. 昨天晚上一輛車猛撞到一棵樹上。 8.flood n 洪水 a terrible flood 一場可怕的洪水 9.wash away 沖走 wash away the village 沖走這個(gè)村莊 wash them away eg. A terrible floo

33、d washed away his house. 10. village n 村莊 ，鄉(xiāng)村 （villager 村民） in the village 在村子里 a small village 一個(gè)小村子 11 thunder n 雷聲，雷 lightning n 閃電 thunder and lightning 電閃雷鳴 The lightning started a big fire in the classroom building. 12.storm n 風(fēng)暴 , 暴風(fēng)雨 There was a heavy storm with

34、 thunder and lightning last week. 13. catch fire 著火（強(qiáng)調(diào)動(dòng)作） be on fire 著火 , 失火（強(qiáng)調(diào)狀態(tài)） eg. Look！The house is on fire. The house caught fire yesterday. 14. shake vi.& vt. 搖動(dòng)，震動(dòng) 過去式是shook, shake slightly輕微震動(dòng) Look! The trees are shaking in the strong wind.shake hands with sb 與某人握手 n. 搖動(dòng)，震動(dòng)a

35、slight shake一陣輕微的震動(dòng) shaking n. 搖動(dòng)，震動(dòng) Finally, the noise and shaking ended. 15. behind adv.在后面 come from behind 16. loud adj. 響亮的；大聲的；喧鬧的 in a loud voice大聲地 Please speak louder. I can’t hear you clearly. 請大聲點(diǎn)講話。我聽不清楚你說的話。 loudly adv.大聲地，吵鬧地（有時(shí)強(qiáng)調(diào)聲音高，吵鬧，不悅耳），其基本意義與 loud 相同，還常與 ring，knock 等動(dòng)

36、詞連用。 Suddenly the bell on the wall rang loudly. 突然，墻上的鈴大聲地響起來。 Don't talk so loud (loudly)--you'll wake the whole street. 別那么大聲說話，你快把左鄰右舍都吵醒了。 17. clear vt. 清除，清楚 clear the snow 18. fear n. 害怕，恐懼a moment of fear一絲（陣）恐懼，scream in fear驚慌的尖叫 The girl is _afraid(害怕)of lightning and thunder. Th

37、e cat ran away quickly in fear(恐懼). 19. direction n.方向in all directions：朝四面八方=in every direction go in a wrong direction走錯(cuò)方向 in the direction of…(不是東南西北等方位名詞)， 朝村莊方向：walk in the direction of the village。 20. while conj.當(dāng)……的時(shí)候，和……同時(shí)（引導(dǎo)從句，且從句中多用進(jìn)行時(shí)或系表結(jié)構(gòu)） I arrived home while Mum was cooking su

38、pper yesterday. 昨天在媽媽做完飯的時(shí)候我到了家。 21. brick n.磚，磚塊 This house is made of wood and bricks.這所房子由磚頭和木料建成。 22. silent adj.寂靜的silent adj.寂靜（英文釋義：quiet）keep silent=keep quiet保持安靜 23. not… at all一點(diǎn)也不I don’t like swimming at all.He was not tired at all after the long walk. 24. nervous adj.緊張不安的 Don’t be

39、nervous when you are in trouble. 25. nearly adv. 幾乎，將近 nearly fall over. 差點(diǎn)跌倒 He fell and almost \nearly broke his leg. 他摔了一跤，險(xiǎn)些摔斷了腿。 Almost no one came to the party. 幾乎沒有人來參加晚會(huì)。 26. beat v.（使）規(guī)律作響，做節(jié)奏運(yùn)動(dòng)beat vi. (心臟)跳，做節(jié)奏運(yùn)動(dòng) 過去式是beat (不同于：jump 跳躍 He jumps very far/high.他跳得很遠(yuǎn)、很高。) 我的心臟跳得很

40、快。My heart is beating very fast. 27. if conj.是否引導(dǎo)句子常放在wonder, know之后，充當(dāng)賓語從句。如：I don’t know if he will come tomorrow.我不知道他明天是否會(huì)來。 不同于：if作如果解時(shí)從句中的將來時(shí)要用一般現(xiàn)在時(shí)。 If he comes here tomorrow, please call me.如果他明天來，請給我打電話。 We’ll play football if it doesn’t rain tomorrow.如果明天不下雨我們就踢足球。 28.trapped adj.困住的

41、be trapped被困住 29. mind n. 頭腦 go through one’s mind傳遍我的大腦; make up one’s mind(s) to do sth=decide to do sth v. 介意 mind doing sth 30. calm vt. 使平靜；使鎮(zhèn)定vi. 平靜下來；鎮(zhèn)定下來 calm down adj. keep calm保持冷靜 31. since conj. 因?yàn)?；由于；既然Since you come here, you should work hard at your English. 32.

42、still adv. 仍然；更；靜止地 be still alive 仍然活著 33. alive adj. 活著的；活潑的；有生氣的 比較級 more alive 最高級 most alive stay alive仍活著; 活著 34. dark n. 黑暗；夜；黃昏；模糊 living area 居住地 in the dark/ darkness在黑暗中； 35. find one’s way out 找到出路 lose one’s way迷路get lost 36. shout n. 呼喊；呼叫 hear shouts from exci

43、ted people 聽到來自那些興奮的人的喊叫聲 v. shout at對…大喊 shout loudly大聲的喊 37. at last = in the end = finally 38. daylight n. 白天；日光 see the bright daylight 看到明亮的日光 39. safe adj. 安全的；可靠的；平安的safely adv. land safely 安全著陸 n. safety (反義詞danger) 40. asleep adj. 睡著的, almost asleep 快要睡著了 fall as

44、leep 睡著 feel sleepy 感到瞌睡 the sleeping boy正在睡覺的男孩 41. after conj. 在……之后 look after sb 照看某人 after breakfast After breakfast Amy took a taxi to the station. 早飯以后，埃米乘出租車去了車站。 42. break v. 打破； broke （過去式） be broken毀壞了 break down 出故障，壞掉 43. because conj. 因?yàn)? because of sb/sth/

45、doing sth 44. as……as possible 盡可能 as soon/early/fast as possible 45. rule n.規(guī)則 follow traffic rules 遵守交通規(guī)則 46. railway n. 鐵路 on railways 47. burn n.燒傷,燙傷,灼傷cover the burn with a clean towel burn vt.&vi. 燃燒，燒毀 過去式burnt/ burned look at the bright and burning sun 48. daughter 女兒 g

46、randdaughter （外）孫女 son 兒子 grandson （外）孫子 49. board n.. 木板 a few boards 幾塊木板 50. weekday n.工作日 on weekdays 51. headache n.頭痛 have a headache 52. toothache n. 牙痛 have a terrible toothache 53. countryside n. 鄉(xiāng)下，農(nóng)村 in the countryside 54. housework n.家務(wù)活 do housework 5

47、5.pancake n. 烙餅，薄餅 make pancakes 做烙餅 鞏固練習(xí) 一．詞匯 A）請根據(jù)題中空格后的中文提示、英文釋義或音標(biāo)，寫出句中所缺單詞，使句子通順。 1. The girls are often afraid of __________ ( the loud noise following lightning ) in summer . 2．The car________ (事故)killed many people． 3. People looked at each other in________ (恐懼)

48、． 4. He has two children . One is a son. The other is a __________. 5. The rainstorm washed away the _______ /’ v i l i d?/. B) 請從方框中選用合適的詞，并用其適當(dāng)形式填空，使句子通順, 每詞限用一次。 nature nerve silence direct sleep 1. Orange juice is __________ food for the babies 2. After a day’s hard work,

49、he fell ________ soon. 3. On such a _________ night, everything seemed to be so nice. 4. I felt _________ and my heart was beating fast. 5. The frightened people looked at each other in fear and then ran in all _____________. C) 請根據(jù)句意，從方框中選用合適的動(dòng)詞, 并用其適當(dāng)時(shí)態(tài)填空，使句子通順。 sound visit do

50、 teach play 1. —Tomorrow is Sunday. —Yes, we ______________ our friends. 2. Who ____________ you Chinese before you came to this school ? 3. What ________ you _________ last month? 4. Listen! The music ___________nice. 5. —Where’s Simon? —He ___________ badminton with the girl in re

51、d. D）請你把下列詞組譯成英語 1. 感到輕微的震動(dòng)____________________________________________________ 2.片刻的恐懼________________________________________________________ 3.找到出路__________________________________________________________ 4.盡可能......_______________________________________________________ 5.因?yàn)開___________

52、___________________________________________________ 二．單項(xiàng)選擇 ( ) 1. They were rowing boats ________ we were having dinner. A. when B. as C. while D. during ( ) 2. I was very angry with John; he just _________ when I spoke to him. A. isn’t listening B. hasn’t listened

53、 C. didn’t listen D. wasn’t listening ( ) 3.A true friend can see the pain(痛苦) in your eyes ______ everyone else believes the smile on your face A. while B. because C. before D. until ( ) 4. Many Chinese students think science subjects are _______ foreign languages

54、A. more difficult as B. less difficult than C. much difficult than D. so difficult as ( ) 5. The boy, with his parents, ________ be here for Thanksgiving day. A. is going to B. are going to C. be going to D. will be going to ( ) 6. ---- How did the accident happen? ---

55、-The driver ____ an e-book on his mobile phone while driving. A. was reading B. read C. reads D. is reading ( ) 7. The accident happened ______ a cold winter early morning. A. in B. at C. on D. for ( ) 8. –What did the teacher say just now? ---Sorry, I di

56、dn’t hear it . I ____ out of the window. A. look B. looked C. am looking D. was looking ( ) 9. Do you know if the school ______ a sports meeting next month? A. holds B. to hold C. hold D. will hold ( ) 10. ---_____ do you live from your school? ---- Abo

57、ut five minutes’ ride. A. How long B. How far C. How often D. How soon ( ) 11. The floor is very dirty. Will you please _________ ? A. to mop up it B. mop up it C. to mop it up D. mop it up ( ) 12. The window ________ and we got a big shock. A. threw B.

58、took C. crashed D. made ( ) 13. ---It’s too hot.. Would you mind my _____ the window? --____. Do it as you like. A. to open; OK B. opening; Certainly not C. opening; Of course D. open; Good idea ( ) 14. When I passed the classroom, I heard a girl _______ in it. A. sing

59、 B. sings C. sang D. singing ( ) 15.If there is any change to the plan, I will tell you as soon ________. A. as possible B. as impossible C. as quick D. as quickly 三．語法結(jié)構(gòu) 1. You are all here. Let’s start the meeting. (用since連成一句) __________________________________

60、_______________________________. 2. They do eye exercises every day.(用 at 9o’clock yesterday替換) They _________ _________ eye exercises at 9o’clock yesterday. 3. Lucy was reading a book when I came into the classroom. (對劃線部分提問) _________ _________ Lucy _________ a book? 4. It rained heavily

61、last night.(同義句) There ________ _______ ________ ___________ last night. 5. People were in a hurry to take the sick man to hospital. (改為同義句) People ____________ ______ take the sick man to hospital. 四．翻譯句子 1. 我感覺很緊張，心里跳得很快。 I ________ __________ and my heart ________ ___________ _______

62、____. 2. 當(dāng)?shù)卣痖_始時(shí)，我正在睡覺。 I _________ _________ when the _________ __________. 3. 當(dāng)Andy來到房間時(shí)，Millie正在看電視。 Millie ________ _________ _________ ________ Andy _______ _______ the room. 4. 幸運(yùn)的是，有足夠的空間讓我移動(dòng)。 ___________, there was _________ _________ for me _______ _______. 5. 大風(fēng)中，我丟失了我的傘，也差

63、點(diǎn)摔倒了。 I ________ my _______ in the wind and I nearly _______ ________. 五．短文填空 There were three old teachers at the railway s___1_____. They were taking happily. The train arrived, but they didn’t notice. Then the conductor(列車長) shouted, “G_ 2____ on the train and take the seats,please”

64、 The teachers heard the conductor and rushed for the train. T__3___ of them got on the train b___4_____ it moved. The third one didn’t get on the t_____5___. It was Mr Green. He looked worried. One of his students was at the station. He t___6____ to comfort(安慰) the teacher. It wasn’t really b___7

65、__ ,sir,” said the student. “Two out of three c____8____ the train. That’s quite good, you know.” “I know, “ the teacher said, “But it was m___9___ train. My friends only came to s___10____ goodbye to me” 1._____________2.______________3.______________4.________________5.______________ 6._____

66、________7.______________8.______________9.________________10.______________ 六、閱讀表達(dá) 閱讀短文，按要求完成短文后的各項(xiàng)任務(wù) Dust storms are Beijing again. The people of Beijing are wearing masks to protect their mouths and noses. The dust storms are a problem for the people of Beijing. For several years. The storms have made being outdoors dangerous. Why do the sandstorms hit Beijing and How do we solve the problem? The sand and dust are a problem whenever the wind comes from the north.. ①When the wind is_______