【英語】英語中考英語語法填空及答案經典

1、【英語】英語中考英語語法填空及答案經典一、初三中考語法填空（含答案詳細解析）1 閱讀下面短文，在空白處填入一個適當的詞，或填入括號中所給單詞的正確形式。Today almost everyone knows computers and the Internet. If I ask you" What is the most important in your life? ", maybe you will say" Computers and the Internet".The （ one ） computer was made in 1946. It

2、was very big but it worked（slow ） . Today computers are getting smaller and smaller. Butwork faster and faster.What can computers do? A writer has said, "People can't livecomputers today."The Internet came a little later than computers. It is about twenty-three years later than compute

3、rs. But now it can （ find ） almost everywhere. We can use it to read books,write letters, do （ shop） , play games or make friends.Many students like the Internet very much. They often surf the Internet as soon as they are free. They make friends on the Internet and maybe they have never seen these f

4、riends. They don't know their real （name） , ages, and even sex （性另U）. They are so（ interest ） in making the "unreal friends" that they can't put their hearts into study. Many of them can't catch up with others on many subjectsof that.We can use computers and the Internet to lea

5、rn more about the world. But atsametime, we should remember that not all the things can be done by computers and the Internet.【 答 案 】 first ； slowly ； they ； without ； be found ； shopping ； names ； interested ； because； the【解析】 【分析】文章大意：文章介紹了電腦的發(fā)明時間，以及電腦的 用途。還有電腦對 我們生活的影響。（ 1）句意：第一臺電腦是在 1946 年制造的。根據

6、定冠詞 the ，可知應使用序數詞first ，故答案是 first 。（ 2）句意：它很大，但是工作得很慢。slow 修飾動詞 worked ，應使用副詞slowly ，故答案是 slowly 。（ 3）句意：但是他們工作的越來越快了?？杖碧幹复拔牡腸omputers ，因此使用 they ，故答案是 they 。（ 4 ）句意：現在沒有了電腦人們不能生活。因為電腦在我們日常生活中越來越重要。所以沒有電腦就不能生活，沒有without ，故答案是without 。（ 5）句意：但是現在到處都可以發(fā)它。主語it 和 find 是被動關系，應使用被動語態(tài)，含有情態(tài)動詞的被動語態(tài)是：情態(tài)動詞+b

7、e+過去分詞，故答案是be found。（ 6）句意：我們可以用電腦讀書、寫信和購物，購物do shopping ，固定搭配，故答案是shopping 。（ 7）句意：他們不知道他們真正的名字。name 名字，可數名詞，根據their 可知應使用復數形式，故答案是names。（ 8 ）句意：他們對于結交不真實的朋友那么感興趣，以致于不能把心思用在學習上。beinterested in ,對 感興趣，故答案是interested。（ 9）句意：因為這個原因，他們中的許多人在許多課程山上跟不上其他學生。because of應因為，固定搭配，故答案是because。（ 10 ）句意：但是同時，我們應

8、該記住電腦和網絡并不能夠做所有的事。 at the same time ，同時，固定短語，故答案是the。【點評】考查詞匯在篇章中的運用能力，答題時首先要跳過空格通讀文章掌握其大意，然后細讀文章，字斟句酌逐一作答，注意考慮句型、語法、搭配、語境等因素。最后通讀一 遍，檢查驗證。2 閱讀下面的短文，用括號內所給詞的適當形式填空，必要時可加助動詞或情態(tài)動詞。I never saw my father home from work late or ill, nor did I ever see my father take a "night out with the boys".

9、 He had no （ hobby） but just took care of his family.For 22 years, since I left home for college, my father called me every Sunday at 9:00 am. He was always （interest ） in my life how my family as doing. The calls even came whenhe and my mother were in Australia, （ English） or Florida.Nine years ago

10、 when I bought my （ one ） house, my father, 67 years old, paintedmy house himself. He worked eight hours a day. He would not allow me （ pay）someone to have it done. All he asked was a glass of iced tea, and that I hold a paintbrush for him and talk to him. But I was too busy, for I had a law practic

11、e to run, and I could not take the time to hold the paintbrush, or talk to my father.Five years ago, my 71 year old father （ spend） five hours putting together aswing set （秋千） for my daughter. Again, all he asked was that I get him a glass of iced tea, and talk to him. But again, I had laundry to do

12、, and the house to clean.The morning on Sunday, January 16, 1996, my father telephoned me as （ usually ） ,this time he had seemed to have forgotten some things we had discussed the week before. I had to get to church, and I cut the conversation short.The call came at 4:40 am. That day my father （ se

13、nd） to hospital in Florida, I got ona plane immediately, and I vowed （發(fā)誓） that when I arrived, I would make up for the lost time, and have a nice long talk with him and （ real） get to know him.I arrived in Florida at 1:00 am, but my father had passed away at 9:12 pm. This time it was he who did not

14、have time to talk, or time to wait for me.In the years since his （ die） I have learnt much about my father, and even moreabout myself. As a father, he never asked me for anything but my time. Now he has all my attention, every single day.【答案】 hobbies ； interested ； England ； first ； to pay ； spent ；

15、 usual； was sent ； really ； death【解析】 【分析】 這篇短文中作者給我們講述了她的父親，她父親是一個很顧家的人，眼里只有他的家人。作者在短文中講述了生活中的幾件事情，從這些事情中我們可以看到，作者因為太忙，跟父親沒有太多的交流，當作者想要彌補時，父親卻離開了她。（ 1）句意： 他沒有愛好，但只是照顧家人。 hobby 是可數名詞，表示泛指用復數形式， 故填 hobbies 。（ 2）句意：他總是對我的生活感興趣。 be interested in ，固定搭配，對 感興趣，故填interested 。（ 3）句意：這些電話甚至是在他和我媽媽在澳大利亞、英國或佛羅

16、里達的時候打來的。根據in Australia可知此處是表示國家的名詞，England,英國，故填 England。（ 4）句意：九年前，當我買下我的第一棟房子時，我67 歲的父親親自粉刷了我的房子。one ，基數詞，一，表示第一個，用序數詞，first ，故填 first 。（ 5 ）句意：他不允許我付錢給某人去做這件事。 allow sb to do ，固定搭配，允許某人做，故填 to pay 。（ 6）句意：五年前，我71 歲的父親花了五個小時組裝秋千給我女兒。根據Five yearsago 可知是一般過去時， spend 的過去式是spent ，故填 spent 。（ 7）句意：199

17、6 年 1 月 16 日星期日的早上，我父親像往常一樣7 點給我打電話，這次他似乎忘記了我們一周前討論過的一些事情。 as usual ，固定搭配，像往常一樣，故填usual 。（ 8）句意：那天，我父親8 被送到佛羅里達州的醫(yī)院。根據That day 可知時態(tài)是一般過去時， send 與主語 father 是被動關系，故是被動語態(tài)，主語是第三人稱單數，助動詞是was ， send 的過去分詞是sent ， 故填 was sent。（ 9）句意：我發(fā)誓當我到達時，我會彌補失去的時間，和他好好長談，然后真正地了解他。副詞修飾動詞短語get to know ， real 的副詞是really ，故

18、填really 。（ 10）句意： 在他去世后的幾年里，我了解了很多關于我父親的事情，甚至更多關于我自己的事情。 his 是形容詞性物主代詞，其后是名詞， death ，是名詞，故填death ?！军c評】考查語言綜合運用能力，注意謂語的時態(tài)，語態(tài)，詞性，搭配等多種用法。3 閱讀下面短文，在空白處填入適當的內容（不多于3 個單詞）或括號內單詞的正確形式。Ernest Hemingway, the son of a doctor and a music teacher, was born in 1899 in Oak Park, Illinois. Hemingway's father （

19、 teach） him early on how to hunt and fish, two activitiesHemingway loved throughout his life. Instead of （ go） to college, Hemingway becamea reporter for the Kansas City Star.Later, in Europe, he worked as a driver the Italian army until he was wounded andshipped home, where he again wrote for newsp

20、apers. Two years , he moved to Paris,where he hoped to improve his writing. There he became friends with other （America ） writers, includingGertrude Stein and F. Scott Fitzgerald.Hemingway developed style of writing that was simple and direct. He chose wordssparingly （儉省地）, avoided using adjectives,

21、 and trusted the reader to understand （ mean ） of his writing. As he put it, "I always try （ write ） on the principle （原則）of the iceberg （冰山） . There is seven eighths of it under water for every part that shows. "This style continues to influence Writers today. In his career （生涯） , which l

22、asted some 40 years, Hemingway earned the Pulitzer Prize and the Nobel Prize. He was one of the finest writers of the （ twenty ） century.For a while Emest Hemingway lived in Key West, Florida, where he had nearly 50 cats. One ofthem was a cat with six toes （腳趾） , which a ship's captain had given

23、 him. Today his Key West home is a museum, and many cats still live there. Some of them are （ child ） ofHemingway's six-toed cat. Hemingway was married four times and had three sons. He died in 1961.【答案】 taught ； going ； for ； later ； American ； a； meaning ； to write ； twentieth ； children 【解析】

24、【分析】本文介紹了海明威及其寫作風格。（ 1）句意： 海明威的父親很早就教他如何打獵和釣魚。描述過去用一般過去時， teach 的 過去式是 taught ，故填 taught 。（ 2）句意：海明威沒有去上大學，而是成了堪薩斯城明星報的記者。of 是介詞其后是動名詞，故填going 。（ 3）句意：后來，在歐洲，他在意大利軍隊當司機，直到他受傷并被運回家，在那里他再次為報紙寫作。work for,固定搭配，為工作，故填for。（4）句意： 四年后，他搬到巴黎，希望在那里提高寫作水平。時間段 +later, 之后， 故填 later 。（ 5）句意：在那里，他和其他美國作家成了朋友。write

25、rs 是名詞其前是形容詞做定語，America 是名詞， American 是形容詞，故填American 。（ 6 ）句意：海明威形成了一種簡單直接的寫作風格。 style 是名詞單數，以輔音音素開頭，故用不定冠詞 a 表示泛指，故填a。（ 7 ）句意：他謹慎地選擇詞語，避免使用形容詞，并相信讀者能理解他作品的意思。understand 后是動名詞做賓語，故填 meaning 。（ 8）句意：我總是試圖用冰山的原理寫作。try to do ，固定搭配，嘗試做某事，故填towrite 。（ 9 ）句意：他 是 20 世紀最優(yōu)秀的作家之一。根據定冠詞 the 可知，此處是序數詞，twenty 是

26、基數詞， twentieth 是序數詞 ， 故填 twentieth 。（10）句意：其中一些是海明威六趾貓的孩子。根據are,可知表語是名詞復數，child的復數是 children ， 故填 children ?！军c評】考查語法填空，注意謂語的時態(tài)，非謂語動詞，詞性，介詞搭配等多種用法。4 閱讀下面短文，根據文章大意用所給單詞的適當形式填空（未提供單詞的，限填一 詞），使文章意思完整、正確。There is a nice family living in Valladolid, a beautiful city in Spain.father, Jose Garcia,is a tall

27、and friendly man. He （ work ） in a famous company. He married Teresa,a（ beauty ） woman, dark eyes and light hair. She is a （ teach ） ofa primary school. Jose and Teresa have three （ child ） : Susan, Rebecca and Juan.The （ old ） , Susan, is 24 years old. She's a doctor and busy with her work ever

28、y day.She（ usual） goes to work at 8 a.m. and comes home after 7p.m. Rebecca, a beautifulgirl with big dark eyes, is 19 years old and （ study ） Chinese in the Canary Islands. Juan,a naughty 11-year-oldboy, dreams ofa great football player. They are a happy family.【答案】 The ； works ； beautiful ； with ；

29、 teacher ； children ； eldest ； usually ； studies ；becoming【解析】 【分析】文章大意：在西班牙美麗的城市瓦拉多利德，住著一個很好的家庭。何塞加西亞娶了特蕾莎。她是一所小學的五年級教師。何塞和特蕾莎生了三個孩子：蘇珊、麗貝卡和胡安。蘇珊， 24 歲。她是個醫(yī)生，每天都忙于工作。 She 早上 8 點上班，晚上7點回家。 Rebecca， 19 歲，在加那利群島學習中文。胡安，一個頑皮的 11 歲男孩，夢想著成為一名偉大的足球運動員。他們是一個幸福的家庭。（ 1）句意：爸爸，何塞加西亞是一個高個子善良的人。 father 特指前文提到的住在

30、瓦拉多利德承德市幸福家庭中的爸爸，因此使用定冠詞，因為在句首，手字母t 應大寫，故答案是 The。（ 2 ）句意：他在一個著名的公司上班。本文的基本時態(tài)為一般現在時，所以本句也是一般現在時，主語he 是第三人稱單數，因此謂語動詞使用單三形式，故答案是works 。（ 3）句意：他娶了一個叫做特蕾莎的長著黑色眼睛的婦女。beauty 作定語修飾woman ，應使用形容詞 beautiful ，故答案是beautiful 。（ 4 ）句意：他娶了一個叫做特蕾莎的長著黑色眼睛的婦女、長著黑色眼睛作定語修飾woman ，應使用介詞with 連接，故答案是with 。（ 5）句意：他是一個小學的老師。根

31、據冠詞a ，可知后面單數可數名詞，與teach 相關的名詞是 teacher ，老師，故答案是teacher 。（ 6）句意：何塞和特蕾莎有三個孩子。child 孩子，可數名詞，根據three 可知應使用復數形式 children ，故答案是children 。（ 7）句意：最大的，蘇珊24 歲了。根據后文的敘述可知蘇珊年齡最大，兄弟姐妹之間年齡最大使用eldest ，故答案是eldest 。（ 8）句意：她通常八點上班。usual 修飾 go to work ，應使用副詞形式usually ，故答案是usually。（ 9）句意：長著黑色大眼睛的麗貝卡19 歲了，在加那利群島學習中文，文章的

32、基本時態(tài)為一般現在時，主語Rebacca是第三人稱單數，動詞使用單三形式，故答案是studies。（ 10）句意：十一歲的胡安是一個淘氣的男孩，他的夢想是成為一樂偉大的足球運動員?？杖碧幨?a great football player. 的邏輯謂語，能夠跟a great football player. 構成動賓關系的是 become ， of 是介詞，介詞后跟動詞 ing 形式，故答案是becoming ?！军c評】考查詞匯在篇章中的運用能力，答題時首先要跳過空格通讀文章掌握其大意，然后細讀文章，字斟句酌逐一作答，注意考慮句型、語法、搭配、語境等因素。最后通讀一遍，檢查驗證。5 閱讀下面短文

33、，在空白處填入一個適當的詞或填入括號中所給單詞的正確形式。Friends are important to everyone, , some people may have trouble （ keep ） their friendships. Here are some tips on how to make your friendship （ deep ） and stronger. Be yourself. A lot of teens try not to lose the friendship once they become friends with some people. Th

34、ough your identity （身份） is always changing, some of your personality will stay pretty much same. Find out those things are, think hard about who youwant to be, and then show yourself （ honest ） to the people around you. Avoid gossip （八卦） . Friends shouldn't spread rumors （謠言） about other friends

35、. If you've heard something bad about your friends, （find ） a proper way of asking themabout it by （ you ） . If you're not sure how to talk to them about it, ask a trustedfriend for advice. Protect your friends. Very often, somebody that you're not close to doubts one of your （friend ） .

36、 It's important to find out both sides of the story, but it's also a good chance to show your friend that you trust him by telling him. Return the care. There are times when a friend will lend you a textbook, or a shoulder to cry on. A good friend will cheer you up when you're in trouble

37、 and listen patiently when your friend shares a problem you. Be sure you are as helpful as your friend, because he will takenotice and feel good you.【答案】 however ； keeping； deeper ； the ； what ； honest； find ； yourself ； friends ； with【解析】 【分析】大意：文章主要提出了使友誼變得深厚、堅固的四個建議。（ 1）句意：然而，有些人可能在保持友誼上有麻煩。根據上文F

38、riends are important toeveryone 朋友對每個人都很重要，可知此處為轉折，然而有些人可能在保持友誼上有麻煩，應用轉折連詞however。故答案為however。（ 2）句意：有些人可能在保持友誼上有麻煩。根據固定搭配have trouble doing sth. 做某事有麻煩，可知此處應用動詞 keep 的 ing 形式 keeping 。故答案為 keeping 。（ 3 ）句意：這里有一些在如何使你的友誼更深厚、更堅固的提示。根據并列形容詞比較級 stronger 更堅固，可知此處應用形容詞 deep 的比較級deeper 。故答案為deeper 。（ 4 ）句

39、意：盡管你的身份總是在改變，你的一些性格基本上會保持一樣。根據形容詞same, 一樣的，可知此處應填定冠詞the。故答案為the。（ 5）句意：找到那些東西是什么。根據賓語those things ，那些動詞，可知應用疑問詞what 。故答案為 what 。（ 6 ）句意：然后向你周圍的人誠實地展示你自己。根據副詞修飾動詞，可知此處應用形容詞 honest 的副詞形式honestly 修飾動詞show 。故答案為honestly 。（ 7）句意：找到一個合適的方式問他們。根據下文If you're not sure how to talk to themabout it, ask a

40、trusted friend for advice. 如果你不確定如何和他們討論，問一個你信任的朋友 要建議，可知此處應用動詞原形引導祈使句表勸告。故答案為 find 。（ 8）句意：找到一個合適的方式自己問他們。根據固定搭配，by oneself ，自己，可知應用代詞 you 的反身代詞yourself ，故答案為 yourself 。（9）句意：某個你不親近的朋友懷疑你的一個朋友。根據固定搭配，one of+可數名詞復數 ，可知此處應填名詞friend 的復數形式friends ，故答案為 friends 。（10）句意：當你的朋友和你分享一個問題。根據固定搭配，share sth. wi

41、th sb.,和某人分享某物，可知此處應填介詞 with ，故答案為 with ?！军c評】考查語法填空，注意根據單詞在語境中的詞性進行必要的變形，同時熟記固定搭配和基本句型。6 閱讀下面短文，按照句子結構和上下午連貫要求，在空格處填入一個適當的詞或使用括 號中的詞語的正確形式填空。Jason and Andy are twins. They share a lot of things, including room, food and toys.One Saturday, Jason and Andy went out （ play） with a toy car. Both of themw

42、anted to be the owner of the car, so they shouted at each other. （ They） motherheard the boys arguing. She came out and told them to take turns to play with the toy car, but the twins wouldn't.A few days later, Mother brought pet home. "Can't we each have our own pet dog?"asked the

43、 boys. They were （ tire ） of sharing everything."No! The dog must （ share） ." Mother said. "You will have to feed the dog andmake sure it does not get into anything wrong."Several days later, the dog got into mother's room （ secret） and made a mess there.Jason saw the dog pla

44、ying with mother's clothes. He quickly went to find Andy and told him the dog had done."Oh, no! It's our duty to clean up the mess!" （cry） Andy. They boys picked up theclothes and put them away rapidly."Just think, Jason," said Andy, "what a big mess two （ dog ） woul

45、d made!""I agree you," laughed Jason, "Maybe sharing isn't so bad!"【答案】 to play ； Their ； a； tired ； be shared ； secretly； what ； cried ； dogs ； with【解析】 【分析】本文講述了兄弟兩人通過養(yǎng)狗學會了分享。（ 1 ）句意： 一個星期六，杰森和安迪帶著一輛玩具車出去玩。 go out to do ，固定搭配，出去做某事，故填to play 。（ 2）句意： 他們的母親聽到男孩們在爭吵。 mot

46、her 是名詞，其前是形容詞性物主代詞，they 的形容詞性物主代詞是their ，他們的，故填Their 。（ 3）句意：幾天后，媽媽帶了一只寵物回家。 dog 是可數名詞單數，前面應用冠詞限定。pet以輔音音素開頭，用不定冠詞a,故填a。（ 4）句意： 他們厭倦了分享一切。 be tired of doing sth. ，固定搭配，厭煩做某事，故填tired 。（ 5）句意： “不！這只狗必須分享。 ”母親說。 share 與 dog 是被動關系， must 是情態(tài)動詞，故用 must be done ，故填 be shared。（ 6）句意： 幾天后，這只狗悄悄地進入母親的房間，把那里弄

47、得一團糟。副詞修飾動詞短語 got into , secret 的副詞是 secretly, 故填 secretly。（ 7）句意： 他很快去找安迪，并告訴他狗做了什么。賓語從句中缺少賓語，故用 what 指 代事或物，故填what 。（ 8 ）句意： 哦，不！收拾爛攤子是我們的責任！ ”安迪喊道。描述過去用一般過去時，cry 的過去式是cried ，故填cried。（ 9）句意： 兩條狗會弄得多糟??！ dog 是可數名詞， two 修飾可數名詞復數，故在 dog 后直接加 s,故填dogs。（10）句意： 我同意你，”杰森大笑說，或許分享不是那么壞。" agreewith sb.,

48、固定搭配，同意某人，故填with 。【點評】考查語法填空，注意謂語的時態(tài)，語態(tài)，詞性，連詞搭配等多種用法。7 閱讀下面短文，在空白處填入一個適當的詞，或填入括號中所給單詞的正確形式。Nowadays, with the development of Internet technology, two-dimensional code （二維碼） is very popular among us. It's also （ call） quick response code （ QR code） . It's agroup of black square dots on a whit

49、e background. This special code was invented aJapanese company in 1994. It's （ wide ） used all over the world.QR code is used （ store） information. It can also store pictures. It is easy to use aQR code. If you want to get the information, just take out your cellphone and scan （掃描） the code by a

50、 special app, and then you can get easily.Today, QR codcs are popular in China. There are QR codes on televisions and the Internet. The codes have been used and printed on Chinese train tickets 2010. When a machinescans the code on the ticket, information of the ticket owner and the train （ appear）o

51、n the screen in a few seconds.QR codes have many special uses. For example, in 2008, Japanese company plannedto put QR codes on gravestones （墓碑） . By scanning the code, visitors could get information about the departed （去世的） person. Recently, special cards QR codes wereintroduced to old people in so

52、me cities in China. If they get （lose） , people can knowabout their names, addresses and telephone numbers of their family members by scanning the codes.【答案】 called； by； widely ； to store ； it ； since； will appear ； a； with ； lost【解析】 【分析】本文講述了二維碼的應用。（1）句意：它也叫做快速響應碼。根據call與主語是被動關系，已有助動詞 is,故此處是過去分詞，

53、故填called。（ 2）句意：這種特殊代碼是1994 年一家日本公司發(fā)明的。 根據 was invented 是被動語態(tài) 可知用介詞by ，被，故填by。（ 3 ）句意：全世界都廣泛地使用它。副詞修飾動詞 used ， widely 是副詞 ， 故填widely 。（ 4）句意：二維碼 碼用于儲存信息。 be used to do ，被用來做某事，故此處是不定式，故填 to store 。（ 5）句意：那么你可以很容易地得到信息。 information 是不可數名詞，故此處用 it 指代，做賓語，故填it 。（ 6）句意：自從 2010 年以來，這些代碼已經被使用并印在中國火車票上。 根據

54、 Thecodes have been used可知時態(tài)是現在完成時，since+時間點2010,是現在完成時的標志，故填since。（ 7）句意：當機器掃描火車票上的代碼時，幾秒鐘后火車票所有者和火車的信息就會出現在屏幕上。 when 引導的時間狀語從句，時態(tài)是主將從現，故此處的主句是將來時will+動詞原形 ， 故填 will appear 。（ 8）句意：例如， 2008 年，一家日本公司計劃在墓碑上貼二維碼。 Japanese 是名詞單數，用輔音音素開頭，故用不定冠詞 a,表示泛指，故填a。（ 9 ）句意：近年來，我國部分城市向老年人推出了二維碼專用卡。此處缺少介詞，做后 置定語，根據

55、 special cards和QR codes可知是一種攜帶關系，with,有；故填with。（ 10）句意：如果他們迷路了，人們可以通過掃描密碼知道他們的家庭成員的姓名、地址和電話號碼。get lost ，迷路，固定搭配，故填lost ?！军c評】考查語法填空，注意適當調整詞性，時態(tài)和介詞等用法。8 閱讀下面短文，用括號內所給詞的適當形式填空，必要時可加助動詞或情態(tài)動詞。People spend almost a third of their lives doing one thing sleeping. Every year, there is a day for people around

56、 the world to celebrate the （ important ） of good and healthysleep World Sleep Day.Sleep is like food for the brain. Healthy sleep helps the body and brain grow and develop. People of different ages need different amounts of sleep. It is said that eight hours per night （ consider） the average amount

57、 of sleep. For students aged 10 to 17, a healthy amount is about eight to nine hours per night. However, last year, the China Youth and Children Research Center （ report ） that about four （ five ） of middle schoolstudents didn't get enough sleep. For some students, they want to sleep early, but

58、they keep （ worry ） about their schoolwork and can't fall （ sleep） quickly. A lack （缺乏） of sleep can greatly affect （影響） a person's life. Students who don't get enough sleep may get poor grades. They cannot pay attention in class or do well in sports. （ solve） this kind of problem, scientists advise that students should ha