外研版 (新标准)七年级上册Unit 3 What's your favourite sport?精品复习练习题

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 Module 6 A trip to the zoo
Unit 3 Language in use
目标导航


课标单词
________ adj. 最受喜爱的
________ v. 拿，扛；携带

目标语块

_____________事实上

常考句型
It eats grass and leaves, but it doesn’t eat meat.
它吃草和叶子，但不吃肉。
重点语法
一般现在时
【答案】
课标单词
1、 favourite 2. carry
目标短语
1. in fact
常考句型
1. It eats grass and leaves, but it doesn’t eat meat.


知识精讲

【精讲01 语法】行为动词的一般现在时

►►►1.一般现在时的疑问句
单数第三人称行为动词的一般现在时的疑问句：
在句首前加助动词does,并将后面的动词还原为动词原形。
肯定答语用“Yes,主语+does.”，否定答语用“No,主语+doesn’t.”。如：
①—Does the elephant eat plants? 大象吃植物吗？
—Yes, it does. 是的，它吃植物。
②—Does the zebra eat bamboo? 斑马吃竹子吗？
—No, it doesn’t. 不，它不吃竹子。
③Does she go to school by bike every day?  她每天骑自行车上学吗？
④Does your father like football?  你爸爸喜欢足球吗？

【注意】在以have或has为谓语动词的句子中，
可以直接将动词have或has提前放于句首构成一般疑问句；
也可以在句首加助动词do或does, have或has再一律用原形have。如：
①Has the zoo many kinds of animals? 这个动物园里有很多种动物吗？
②Does the zoo have many kinds of animals? 这个动物园里有很多种动物吗？
【典例】My brother often ________ my mum ________ the house on Sunday.
A．help; cleans B．help; clean C．helps; clean D．helps; cleans
【答案】C
【详解】句意：我的弟弟经常在周日帮助我妈妈打扫房子。考查动词时态以及非谓语动词。根据“often”可知，句子是一般现在时，主语my brother是单数形式，动词用三单形式。help sb do sth：帮助某人做某事，故选C。

►►►2.一般现在时的否定句
单数第三人称行为动词一般现在时的否定形式：
在动词前加does not构成，可以缩写成doesn’t，后跟动词原形。
即：主语+doesn’t+动词原形+其他.。如：
The elephant doesn’t eat meat. 大象不吃肉。
John doesn't like English at all.  约翰一点儿也不喜欢英语。
She doesn't go shopping often.  她不经常购物。
【典例】My brother ________ his homework at home. He ________ it at school.
A．does; don’t B．doesn’t; does C．doesn’t do; does D．don’t; does
【答案】C
【详解】句意：我哥哥不在家做作业。他在学校做。考查助动词及动词时态。根据语境可知第一空是“不在家做作业”，主语是“My brother”，否定句要借助助动词doesn’t，后接动词原形do，故选C。
【归纳】性一般现在时的句式归纳
肯定
否定
疑问
回答
He likes English.
He does not(doesn’t)
like English.
Does he like English?
Yes, he does.\No, he doesn’t.
She lives in the city.
She does not(doesn’t) live in the city.
Does she live in the city?
Yes, she does.\No, she doesn’t.
The dog likes apples.
The dog does not(doesn’t) like apples.
Does the dog like apples?
Yes, it does.\ No,it doesn’t.

►►► 3.行为动词的一般现在时第三人称单数变化规则：
规则
示例
一般情况下，在动词末尾直接加S
want—wants speak—speaks get → gets
以s,x,ch,ch,o(有生命的)结尾的，在末尾加es
catch—catches potato—potatoes fix → fixes
以“辅音字母+y”结尾的，变y为i，再加es
carry—carries study—studies try → tries


【精讲06 写作】以“动物”为话题
本模块以“动物”为话题，让同学们了解并掌握了许多关于动物的词汇、居住地及生活习性等。
通过学习，能描述自己喜爱的动物，并陈述喜爱的理由。
【佳句荟萃】
①The elephant lives in Africa and in Asia.
②It eats plants and a little fruit, but it doesn’t eat meat.
③The zebra is an African animal.
④It is a very large animal and usually lives alone.
⑤It likes water and is good at swimming.
⑥It is strong and catches many kinds of animals for food.
⑦There are about 200 kinds of monkeys.
【写作任务】
请写一篇短文，描述自己最喜欢的一种动物。
要点：描述动物的习性、特点。
要求：不少于50词。
【范文展示】
My favourite animal is the cat. I have got a cat called Mimi.
She has got two big eyes and she is very nice. She likes meat and fish, but she doesn’t like plants. She likes sleeping very much and playing with a ball. She also plays with me.
I like her very much.
【点评】
1. 第三人称单数句式运用正确。
2. 介绍了猫的外貌特征、饮食及生活习惯等。逻辑关系严密，句子结构合理，最后点明喜爱之情，符合题意，本模块所学佳句也运用得非常到位，是一篇很好的作文。

能力拓展

按要求转换句型
1. I like playing games on the computer. (改为否定句)
I     playing games on the computer.
2. The zoo has many animals. (改为否定句)
The zoo     many animals.
3. The animals live in the forest. (改为一般疑问句并回答)
  the animals   in the forest?
No,    .
4. He usually does his homework after dinner. (改为一般疑问句并回答)
  he usually   his homework after dinner?
Yes, he  .
5. Lingling is good at English. (改为一般疑问句并回答)
  Lingling     English?
Yes,    .
6. We have an American teacher. (改为同义句)
We have   teacher    .
7. The elephants are from Africa. (对划线部分提问)
    the elephants  ?
8. The monkey comes from Europe. (改为一般疑问句)
  the monkey   from Europe?
9. Does the giraffe eat grass? (根据实际回答)
 , it  .
10. The tiger comes from South America. (改为否定句)
The tiger     from South America.
【答案】
1. don't like 2. doesn't have 3. Do, live; they don't 4. Does, do; does 5. Is, good at; she is
6. a, from America 7. Where are, from 8. Does, come 9. Yes, does 10. doesn't come



分层提分

题组A 基础过关练
单项选择
1．I have a trip __________ the city.
A．to B．from C．at D．in
【答案】A
【详解】句意：我去了城里一趟。/我进行了一次城市之旅。A. to 到，前往；B. from 来自，从……起；C. at 在 (某处、某时间或时刻) ；D. in 在……里。have a trip to+地点，意思是“到某地旅行，去某地一趟”。故答案为A。
2．—Do you like giraffes?
— .
A．Yes, I am B．Yes, I do C．Yes, I don’t D．No, I do
【答案】B
【详解】句意：-你喜欢长颈鹿吗？-是的，我喜欢。Yes, I am.是的，我是；Yes, I do.是的，我喜欢；Yes, I don’s.形式错误，Yes是肯定回答，后面用肯定形式；No, I do.形式错误，No是否定回答，后面跟否定形式。一般疑问句中用了助动词Do构成，答语中也用助动词do回答，故应选B。
3．I like the tiger __________ Asia.
A．to B．from C．on D．at
【答案】B
【详解】句意：我喜欢那只亚洲的老虎。A. to 到；B. from 来自；C. on 在……上；D. at 在 (某处，某一时刻)。from（表示来源）来自，源于，从……来。故答案为B。
4．Let’s go and the panda.
A．to see B．see C．seeing D．sees
【答案】B
【详解】句意：让我们去看熊猫吧！to see去看，动词不定式形式；see看见，动词原形；seeing动名词形式；sees动词的第三人称单数形式。这句话中使用了句型Let’s …“让我们…”，表示提建议，后面跟动词原形。该空和前面的go是并列的，也应用动词原形，故应选B。
5．Li Hua's parents hold different opinions on whether they should have________ child.
A．another B．other C．others D．the other
【答案】A
【详解】句意：李华的父母对于他们是否应该再要一个孩子，坚持不同的观点。another表示不定数量中的另一个，后接单数名词；other意为“其他的”，其后常接名词复数；others意为“其他的”，代词，相当于other＋名词复数；the other表示“两者当中的另一个”。根据句意可知，这里泛指另一个孩子，故选A。
6．The kangaroo is from , and the elephant is from .
A．Australian; Asian B．Australia; Asian
C．Australian; Asia D．Australia; Asia
【答案】D
【详解】句意：袋鼠来自澳大利亚，大象来自亚洲。根据句意及题干分析，澳大利亚是Australia；亚洲是Asia，故选D。
7．John White is sailing around the world ________, and sometimes he feels a bit ________.
A．alone; alone B．lonely; lonely C．lonely; alone D．alone; lonely
【答案】D
【详解】句意：约翰·怀特独自驾船环游世界，有时他感到有点孤独。考查词义辨析。alone独自；lonely孤独的，偏远的。第一处修饰动词is sailing，用副词alone；第二处作表语，表示“孤独的”，用形容词。故选D。
8．—What’s the meaning of “The Belt and Road”?
—Let me ________ the words in the new dictionary.
A．look at B．look for C．look after D．look up
【答案】D
【详解】句意：——“一带一路”的意思是什么？——让我在新字典里查一下这些单词。
考查动词短语辨析。look at看；look for寻找；look after照看，照顾；look up查阅。根据“in the new dictionary”可知，此处是查单词。故选D。

题组B 能力提升练
一、单项选择
1．The Shape of Water was a big winner at the 90th Academy Awards, winning four Oscars: Best Production Design, Best Score, Best Director and Best Picture.
A．as soon as B．as well as C．as much as D．as good as
【答案】B
【详解】句意：《水形物语》是第90届奥斯卡最大赢家，赢得了4个奥斯卡：最佳设计奖，最佳分数，最佳导演和最佳影片。A. as soon as 一---就---； B. as well as 还有； C. as much as 和---一样多； D. as good as和---一样好；根据winning four Oscars: Best Production Design, Best Score, Best Director and Best Picture.可知是还有；故选B
2．This is Asian tiger and that is European wolf.
A．a; a B．an; an C．an; a D．a; an
【答案】C
【详解】句意：这是一只亚洲虎，那是一只欧洲狼。a和an都是不定冠词，修饰可数名词单数，表示泛指“一个…”；an用于元音音素前。第一个空后Asian是元音/ei/开头的，故用an修饰；第二个空后的European开头虽然是元音字母，但它的第一个音素是/j/，是辅音，故应用a修饰。选C。
3．If you keep practicing, I believe you will do well in speaking English:
A．be interested in B．catch up with C．be good at D．feel like
【答案】C
【详解】句意：如果你坚持练习，我相信你会擅长英语口语的。be interested in 对……感兴趣；catch up with 追赶上；be good at 擅长于……；feel like doing 想要做某事。do well in 在……方面做得好，相当于be good at。故答案选C。
4．It is very relaxing to listen to light music by oneself.
A．together B．lonely C．alone D．again
【答案】C
【详解】句意：一个人听轻音乐是非常放松的。A. together 一起；B. lonely 孤单的，寂寞的；C. alone 单独；D. again 再一次。by oneself 独自，相当于alone。故答案选C。
5．—Shall we go on Friday or Saturday?
—Either day is OK.It makes no________to me.
A．choice B．change C．difference D．decision
【答案】C
【详解】句意：﹣﹣我们星期五还是星期六去？﹣﹣哪一天都可以，对我来说没什么区别。考查名词辨析。A. choice选择；B. change变化；C. difference不同，差异，区别；D. decision决定。根据Either day is OK，可知哪一天都可以，所以对我来说没什么区别。结合选项可知选C．

二、句型转换（按要求完成句子）
6．The animal eats vegetables and fruit.(改为否定句)
The animal______ ________vegetables_______ fruit.
7．Lily buys some oranges.(改为一般疑问句)
________Lily _______ ________oranges?
8．Helen likes the_tiger. (对画线部分提问)
What _____ _______Helen _______?
【答案】
6．doesn’t eat or 7． Does buy any 8．animal does like
6．【详解】句意：动物吃蔬菜和水果。动物不吃蔬菜和水果。
本句中的动词eats是实义动词且为三单形式，所以改为否定句时需要在动词前加doesn’t，动词变为原形eat；在否定句中一般不用and而是用or。故答案为doesn’t eat…or。
7．【详解】句意：Lily买了一些橘子。Lily买了一些橘子吗？
本句中的动词buys是实义动词且为三单形式，所以改为一般疑问句时需要在句首加does，首字母大写，动词要变为原形buy。在疑问句中通常不用some表示一些，而用any。故答案为Does…buy any。
8．【详解】句意：Helen喜欢老虎。Helen喜欢什么动物？
根据句意和划线部分the tiger可知，需要询问的是Helen喜欢的动物，所以用what + animal来提问，后接一般疑问句；本句中的动词likes是实义动词且为三单形式，所以改为一般疑问句时需要借助does，动词要变为原形like。故答案为animal does…like。

三、阅读单选
Do you like pandas? Now you can watch them eat and play at iPanda. com 24 hours a day.
The panda is a symbol of China. There are only about 1，600 pandas in the wild(野外). You can also see them in the zoos of many countries like the US and the UK.
Pandas have big black eyes and fat bodies(身体). When they eat, they sit on the ground and hold the food with two hands, just like children. They look very cute and funny.
Pandas usually live for 30 years. Now many pandas in the wild have no food to eat. They are in danger and they need our help.
9．People can learn about pandas' life 24 hours a day ________．
A．by telephone B．on the radio C．on the computer D．on TV
10．People think the pandas are very ________．
A．cute B．lazy C．smart D．shy
11．The underlined word “hold” means “________” in Chinese.
A．丢弃 B．收集 C．寻觅 D．拿着
12．Pandas are in danger because ________．
A．they are too fat B．they have no place to live
C．they have no food to eat D．some people want to kill them
13．From the passage, we know that ________．
A．there are a lot of pandas in the world B．pandas can live to be thirty years old
C．people can only see pandas in China D．the panda is a symbol of good luck
【答案】
9．C 10．A 11．D 12．C 13．B
【分析】
本文主要介绍大熊猫。
9．【详解】题意：人们可以_____一天24小时了解熊猫的生活。A. by telephone通过电话；B. on the radio通过无线电；C. on the computer通过电脑；D. on TV通过电视。根据第1段第2句Now you can watch them eat and play at iPanda. com 24 hours a day.（现在你可以在iPanda. Com网站一天24小时观看他们吃和玩。）可知选C。
10．【详解】题意：人们认为熊猫很________。A. cute可爱；B. lazy懒惰；C. smart聪明；D. shy害羞。根据第3段最后一句They look very cute and funny.（它们看起来很可爱很有趣。）可知选A。
11．【详解】题意：下画线单词“hold”汉语意思是什么？根据with two hands（用手）可知“hold”汉语意思是“拿，握”；选D。
12．【详解】题意：熊猫处于危险之中因为____。A. they are too fat他们太胖了；B. they have no place to live他们没有住的地方；C. they have no food to eat他们没有食物吃；D. some people want to kill them有人想杀了他们。根据最后一段第2句Now many pandas in the wild have no food to eat.（现在许多野生的熊猫没有食物吃了。）可知选C。
13．【详解】题意：从这篇文章中，我们知道______。A. there are a lot of pandas in the world世界上有很多熊猫；B. pandas can live to be thirty years old熊猫能活到三十岁；C. people can only see pandas in China人们只能在中国看到大熊猫；D. the panda is a symbol of good luck熊猫是吉祥的象征。根据最后一段第1句Pandas usually live for 30 years.（熊猫通常活30年。）可知选B。

题组C 培优拔尖练
一、单项选择
1．（2020·山东济南·中考真题）He is such a well-known writer that his books are ________ read all over the world.
A．hardly B．widely C．clearly D．politely
【答案】B
【详解】句意：他是如此著名的作家，他的书在世界各地广为阅读。考查副词辨析。hardly几乎不；widely广泛地；clearly清晰地；politely礼貌地。根据“all over the world”可知书籍流传范围很广，用widely符合语境。故选B。
2．（2020·山东日照·中考真题）As the saying goes, “Where there is a will, there is a ________.”
A．wish B．road C．way D．key
【答案】C
【详解】句意：常言道：“有志者，事竟成。”考查名词。A. wish愿望；B. road马路；C. way道路；D. key钥匙。根据英语常识可知，Where there is a will, there is a way为一句谚语，意为“有志者，事竟成”，选C。
3．（2020·山东日照·中考真题）It's necessary for kids to learn to spend money ________.
A．easily B．cheaply C．wisely D．quickly
【答案】C
【详解】句意：对于孩子们来说学会理智地花钱是有必要的。考查副词辨析。easily容易地；cheaply便宜地；wisely理智地；quickly快速地。根据句子结构可知，此处这个副词修饰空前的动词spend，结合常识可知，这里应表示“理智花费”，因此C选项意思符合语境，故选C。
4．（2020·山东东营·中考真题）— Mummy, why do you have grey hair?
— Because you always make me ________.
— Oh, I know why my grandma’s hair is white.
A．bored B．worried C．relaxed D．surprised
【答案】B
【详解】句意：——妈妈，你为什么有一头白发？——因为你总是让我担心。——哦，我知道为什么外婆的头发是白色的了。考查形容词辨析及情景交际。bored无聊的；worried担心的；relaxed放松的；surprised惊讶的。根据语境可知，因为孩子总是让父母担心，父母的头发才会变白。故选B。
5．（2020·山东东营·中考真题）— My pet dog is lost, Mary.
— I’m sorry to hear that. Why not put an ad（广告）in the newspaper?
— Don’t be silly. He can’t ________.
A．hear B．read C．speak D．write
【答案】B
【详解】句意：——玛丽，我的宠物狗丢了。——我很遗憾，为什么不在报纸上登个广告呢？——别傻了，他不识字。考查动词辨析。hear听到；read识字，阅读；speak讲话；write写。根据问句中“put an ad（广告）in the newspaper”可知，此处应使用read，表示“在报纸张登广告是没有用的，因为宠物狗不识字”。故选B。

二、完型填空（2020·山东青岛·中考真题）
My life was perfect when I was twelve years old. I had a big family, 6 my sister, Chrissy, and a little brother, Patrick, whom I loved greatly. Spring was coming, and I was 7 about another summer with Grandma. She and I had great fun together last summer. She was retiring (退休) this year, 8 that meant more time with her. Then, on April 11, 2017, at 10:00 P.M., we were all going to bed when the phone rang. My uncle was 9 to say that Grandpa had just taken Grandma to the hospital.
The next morning I was told that Grandma was gone due to a heart disease. I tried to be strong, but even my father 10 . I hadn't even said goodbye to her. I couldn't control my 11 anymore and began to cry loudly. It finally hit me: She was gone 12 . All she had left me were 13 in the garden — the hours we spent planting flowers and taking care of 14 . I believe that my grandma is a star watching over me, and she would have wanted me to be 15 and happy like her, even though there are bad times. My family and friends love me for who I am and support me for what I do, as I know my grandma would, too.
6．A．besides B．including C．except D．beside
7．A．worried B．excited C．moved D．surprised
8．A．but B．while C．so D．or
9．A．calling B．visiting C．helping D．writing
10．A．shouted B．spoke C．talked D．cried
11．A．thoughts B．words C．ideas D．feelings
12．A．ever B．forever C．always D．sometimes
13．A．instructions B．suggestions C．memories D．experiments
14．A．them B．her C．it D．us
15．A．weak B．careful C．polite D．strong
【答案】
6．B 7．B 8．C 9．A 10．D 11．D 12．B 13．C 14．A 15．D
【分析】
文章大意：本文主要讲作者12岁那年期待着和奶奶一起度过另一个暑假，但奶奶却突然逝世了，留给作者的只有回忆，但作者坚信奶奶一直在守护和支持着自己。
6．【详解】句意：我有一个大家庭，包括妹妹克丽丝和我深爱的小弟弟帕特里克。
besides除了……之外（还有）；including包括；except除去……之外；beside在……旁边。前文说“我有一个大家庭"，后面是具体家庭成员，所以此处用including（包括）。故选B。
7．【详解】句意：春天来了，我很期待和奶奶一起过另一个夏天。worried担心的；excited兴奋的；moved感动的；surprised惊讶的。根据后文"去年夏天我们玩的很开心"，可知我对即将到来的夏天很兴奋，用be excited about。故选B。
8．【详解】句意：她今年就要退休了，那意味着有更多的时间和她在一起。
but但是；while然而；so因此；or否则。“那意味着有更多的时间和她在一起”是“她今年就要退休了”的结果，前因后果，用so符合题意。故选C。
9．【详解】句意：我叔叔打电话来说我爷爷刚刚送奶奶去了医院。
calling打电话；visiting拜访；helping帮助；writing写。前文“电话响"，所以后面一定是用calling（打电话）。故选A。
10．【详解】句意：我试着坚强起来，但连我父亲都哭了。shouted大喊；spoke说；talked谈话；cried哭。根据上文“The next morning I was told that Grandma was gone due to a heart disease. ”可知奶奶去世了，由此可推出爸爸是哭了，用cried符合题意。故选D。
11．【详解】句意：我再也无法控制自己的情感，开始大声哭起来。
thoughts想法；words单词；ideas想法；feelings情感。根据题干中“began to cry loudly”讲开始大哭，可推出是无法控制自己的情感，用feelings符合题意。故选D。
12．【详解】句意：我终于意识到：她永远地离开了。ever曾经；forever永远；always总是；sometimes有时。根据上文“The next morning I was told that Grandma was gone due to a heart disease.”可知奶奶去世了，应是永远离开了，用forever符合题意。故选B。
13．【详解】句意：她留给我的只有在花园里的回忆——我们花时间种花并照顾它们。
instructions说明；suggestions建议；memories记忆；experiments试验。根据题干中“the hours we spent planting flowers and taking care of ____”可知这里在说和奶奶一起的回忆，用memories符合题意。故选C。
14．【详解】句意：她留给我的只有在花园里的回忆——我们花时间种花并照顾它们。
them它们；her她的；it它；us我们。根据题干中“the hours we spent planting flowers”可知是说照顾作者和奶奶种的花，用them指代flowers。故选A。
15．【详解】句意：我相信我的奶奶就像一颗守护着我的星星，她希望我像她一样坚强和快乐，即使有不好的时候。weak弱的；careful仔细的；polite礼貌的；strong坚强的。根据题干中“even though there are bad times”可推出此处是说奶奶希望自己即使在不好的时候，也要像她一样坚强和快乐，用strong符合题意。故选D。

三、多任务混合阅读（2020·山东烟台·中考真题）
阅读下面短文，完成短文后的问题。
Many students want to improve their memories and learn better. Today we will introduce some no-cost things you can do.
Exercise
Before you study, doing exercise may help you better remember what you will learn. Recently, researchers have found that people who did 15 minutes of training remembered more words. Scientists say the best time to exercise is right before you study. It can make you more active.
Pre-study test
The students who take a test before studying remember more information than those who don't. For example, if you are using an English textbook, you might first look at some important words at the end of the unit. You could ask yourself what they mean or how they are used. While you might not know the answer, you will probably have a goal to learn so that you can remember the answer when studying!
Sleep
A study show that sleep helps you to learn in two ways. An expert explains that "a person with enough sleep can concentrate best." He also says, "Sleep itself plays an important role in making the memory stronger which is necessary for learning new information.”
Wakeful rest
When you finish studying, you often go straight another activity. Perhaps you play a video game or watch TV. But researchers suggest that resting after you study may help you remember what you've studied. In a study, even older adults who rested for 10 minutes after learning new words remember more words better.
16．Why can exercise before studying make you remember well?
___________________________________________________
17．Translate the underlined sentence into Chinese.
___________________________________________________
18．In which two ways can sleep help you learn well?
___________________________________________________
19．What helped the older adults remember new words more and better?
___________________________________________________
20．What is the writer's purpose in writing this article?
___________________________________________________
【答案】
16．Because it can make you more active.
17．学习前测试的学生比那些不做测试的学生记住的信息更多。
18．Enough sleep and sleep itself.
19．Resting for 10 minutes after learning.
20．To introduce some ways to help improve memories and learn better.
【分析】
本文主要介绍了几种提高记忆力和学习能力的方法。
16．【详解】根据第三段“Scientists say the best time to exercise is right before you study. It can make you more active.”可知，锻炼可以使人更活跃，故在学习之前进行锻炼可以使人记忆力更好。故填Because it can make you more active.
17．【详解】本句为than引导的比较状语从句，意为“……比……”；The students who take a test before studying“学习前测试的学生”；remember more information“记住的信息更多”；those who don't“那些不做测试的学生”。故填：学习前测试的学生比那些不做测试的学生记住的信息更多。
18．【详解】根据第七段“a person with enough sleep can concentrate best…Sleep itself plays an important role in making the memory stronger…”可知，充足的睡眠和睡眠本身可以帮助人们更好地学习。故填Enough sleep and sleep itself.
19．【详解】根据最后一段“even older adults who rested for 10 minutes after learning new words remember more words better.”可知，学习之后休息十分钟帮助老年人更多、更好地记忆新单词。故填Resting for 10 minutes after learning.
20．【详解】根据第一段“Many students want to improve their memories and learn better. Today we will introduce some no-cost things you can do”可知，作者写这篇文章是为了介绍几种提高记忆力和学习能力的方法。故填To introduce some ways to help improve memories and learn better.