内容正文:
专题03 一般现在时、句子种类、存在句(期末复习讲义)
单元
语法点
常考题型
命题趋势
Unit 1-6
一般现在时、句子种类、存在句
单项选择
语法选择
完形填空
语法填空
阅读写作等
1.注重素养:更加注重对学生英语核心素养的考查。
2.情境化突出:借助生活、学校、社会等多种情境,将语法考察与实际生活相结合。
3.文化传承与价值导向明显:注重选取具有文化内涵和思想价值的语篇。
知识点01 一般现在时
一、一般现在时的定义
一般现在时用于表示:
1、经常性或习惯性的动作(如日常生活、学习安排等)
2、客观事实或普遍真理(如科学规律、自然现象等)
3、现在的状态(如职业、性格、能力等)
例句:
I go to school every day.(习惯性动作)
The sun rises in the east.(客观真理)
She is a teacher.(现在的状态)
二、一般现在时常见标志词
常与下列时间状语连用:
1)always, usually, often, sometimes, hardly, never等频度副词。
如,They usually go to school by bike.
2)once a year, twice a week, every year/day/week等。
如,He writes to his father twice a month.
三、一般现在时的构成 :主语+动词原形/第三人称单数形式(三单)+----.
主语类型
谓语动词形式
例句
I / You / We / They / 复数名词
动词原形
They play football.
He / She / It / 单数名词
动词 + -s/-es(三单变化)
He watches TV every night.
所有主语
be动词(am/is/are)
She is happy.
【注意】是动词原形还是三单取决于主语,当主语是第三人称单数(he,she,it)时,谓语动词为三单,反之,则为动词原形。
如,He plays basketball everyday. I have noodles for breakfast.
动词原形变单三记住六个字母:s,es, ies.具体说,
1)一般情况直接在动词后加s,如,work- works, stay – stays
2)以s,x,ch,sh o,结尾的加es,如,watch- watches,finish- finishes
3)以辅音字母加y结尾加,如 study - studies
四、一般现在时的句式特点
句型
结构
例句
肯定句
主语 + 动词原形/三单形式
He reads books.
否定句
主语 + don't/doesn't + 动词原形
She doesn't like coffee.
一般疑问句
Do/Does + 主语 + 动词原形?
Do you speak English?
特殊疑问句
疑问词 + do/does + 主语 + 动词原形?
What does she eat for breakfast?
注意:
否定句/疑问句中,doesn't/don't 后的动词恢复原形(如:He doesn't play games.)
be动词的疑问句直接提前(如:Is she a teacher?)
易|错|点|拨
1、三单动词忘记加 -s
❌ She go to school. → ✅ She goes to school.
2、否定句/疑问句中动词未还原
❌ Does she likes music? → ✅ Does she like music?
3、be动词与实义动词混用
❌ She is likes apples. → ✅ She likes apples.
4、时间状语位置错误
❌ She goes to school every day on foot. → ✅ She goes to school on foot every day.
解|题|技|巧
根据用法和标志词判断时态。
Tom usually goes to school by bike. (usually→一般现在时主语Tom 三单→goes.)
【即时检测】
1. He _______ newspapers at 8:00 every evening.
A. reads B. is reading C. was reading D. has read
2. David _______ with his friends every weekend.
A. swims B. is swimming C. has swum D. was swimming
3.The school bus picks up the students and _______ the forest.
A. goes over B. goes through C. went for D. go past
4.. My father is a tea lover. He often _______ tea after supper.
A. drinks B. was drinking C. will drink D. is drinking
5.—Tina, what do you usually do at weekends?
—I _______ swimming with my friends.
A. went B. go C. will go D. have gone
知识点02 句子种类(Sentence Types)
英语句子按照用途可分为陈述句、疑问句、祈使句和感叹句四类,此处重点介绍陈述句和疑问句。
1. 陈述句
陈述句包括肯定结构和否定结构。在肯定结构中,谓语动词不含否定词;在否定结构中,系动词be、助动词或情态动词后加not(常用缩略形式),或用no、never等词表示。陈述句句末用句号。
陈述句的肯定式和否定式
肯定式
否定式
Ella's cap is in her schoolbag.
Ella's cap is not in her schoolbag.
He has some ping-pong bats.
He doesn't have any ping-pong bats.
They usually take showers in the morning.
They never take showers in the afternoon.
I can run fast.
I can't run fast.
2. 疑问句
疑问句包括一般疑问句、特殊疑问句、选择疑问句和附加疑问句。疑问句句末用问号。
六年级上册主要学习一般疑问句。
一般疑问句是在句子中用提问的方式提供一些信息,要求对方用Yes或No回答的疑问句。答语通常重复问句里的系动词be、助动词或情态动词,完全否定时口语中通常使用缩略词,如aren't、doesn't、can't。例如:
A: Is this your brother?
B: Yes, it is. / No, it isn't.
A: Do they have a pet dog?
B: Yes, they do. / No, they don't.
A: Does she like maths?
B: Yes, she does. / No, she doesn't.
A: Can you help me with this subject?
B: Yes, I can. / No, I can't.
一般疑问句的回答有时可以省去Yes或No,或者补充更多信息。例如:
A: Can I learn to play weiqi?
B: Sure, you can.
A: Do you want to join a club?
B: Yes, I want to join the music club.
【即时检测】
1.Here is your black tea. (变否定句)
Here ______ ______ your black tea.
2.The boy is from Chongqing. (改为一般疑问句)
______________________________
3.Ben likes flying the kite. (否定句)
Ben ______ ______ flying the kite.
4. It’s under the table. (改为否定句)
It ______ ______ the table.
5.Lily often watches TV on Sundays. (改为一般疑问句)
______ Lily often ______ TV on Sundays?
知识点03 存在句
“There is / are +某物/某人+某地/某时”结构表示“某地或某时有某物或某人”。
在这一结构中,there 没有实际意义,常弱读成/ðə/。句子中的系动词be和后面的名词在数的方面必须保持一致。
一般现在时中存现句的肯定式、否定式、疑问式和简略回答
句式
例句1
例句2
肯定式
There is a nice library behind the classroom building.
There are some pictures of famous people on the wall.
否定式
There is not (isn’t) any water in the bottle.
There are not (aren’t) any students in the classroom today.
疑问式和简略回答
Is there a whiteboard in your classroom?Yes, there is.No, there is not (isn’t).
Are there any plants or flowers in the room?Yes, there are.No, there are not (aren’t).
【注意1】 在存现句中,在有并列主语的情况下,往往根据第一个主语的单复数来确定系动词be的形式(就近原则)。例如:
There is a pen and two books on the desk.
There are two boys and a girl in the room.
【注意2】there be 和 have/has 区别
there be 和 have/has 都表“有”,区别在于: there be 侧重“某地/某时存在某物/某人”,强调存在状态,
主语是 be 后的名词(存在的事物),无生命也能用。
如,桌子上有一本书(There is a book on the desk)
河上有一些鸭子(There are some ducks on the river)。
have/has 侧重“某人/某物拥有某物”,强调所属关系。主语是拥有者,多和有生命的主体搭配,主语为第
三人称单数时用 has。
如,我有一本书(I have a book)。
她有一支新钢笔(She has a new pen)
我叔叔有一辆车(My uncle has a car)
易|错|点|拨(有则可以设计类似小栏目)
1、主谓一致错误
❌ There is two pens on the desk. → ✅ There are two pens on the desk.
2、 “就近原则”误解
❌ There are a girl and two boys in the park → ✅ There is a girl and two boys in the park
3、存在句与拥有句混淆
❌ There is she has a new bag. → ✅ She has a new bag .
❌ There has a new bag on the desk . → ✅ There is a new bag on the desk .
【即时检测】
1.— What’s on the desk?
— There ______ a pen and some English books.
A. is B. are C. be
2.There ______ some books and a pen on the desk.
A. is B. have C. are
3.There ______ some juice and apples on the table.
A. is B. are C. has
4.—What’s in your schoolbag?
—There ______ a pencil box and some books in it.
A. are B. has C. is
5. There ______ a lamp, two books, a computer and so on.
A. are B. is C. be
基础通关(测试时间:10分钟)
一、单项选择
1.—Are there any apples on the table?
—. __________. But there are some oranges.
A. No, there isn’t B. Yes, they are C. Yes, there are D. No, there aren’t
2.—I'm getting hungry. Do you know where we can get some good food?
—Of course! There_________ a restaurant around the corner.
A. will be B. was C. is D. are
3.It often___in summer here.
A. rain B. rains C. rainy D. raining
4.—Look at the monkeys. —Wow! They___so funny.
A. is B. am C. are D. be
5.— _______it often ___ in spring in Shanghai?
—Yes, it's often ___.
A. Is, rainy, rains B. Does, rainy, rain C. Does, rain, rainy D. Do, rain, rains
二、根据要求写出下列句子形式。
1.There are some apples. (改为单数句)
There ______ ______ apple.
2.I know a great restaurant. (变为否定句)
I ______ know a great restaurant.
3.There is a river in the forest. (改为否定句)
There ________ a river in the forest.
4.There are some ducks on the river. (改为一般疑问句)
______ there ______ ducks on the river?
5.Lily often watches TV on Sundays. (改为一般疑问句)
______ Lily often ______ TV on Sundays?
6.She gets up at 6:00 in the morning. (否定句)
She ______ ______ up at 6:00 in the morning.
7.There are some delicious food on the table. (改为否定句)
There ______ ______ ______ delicious food on the table.
拓展提高(测试时间:10分钟)
一、用所给单词的适当形式填空、
1. There ___________(be)twenty-four rooms in the building.
2.There________ (be) some bread on the table.
3. Mary ________ (go) to school by bus everyday.
4. My mother often ________ (wash) the clothes at the weekends.
5. My parents usually ________ (go) out for a walk after supper.
二、阅读填空 , 用所给动词的适当形式填空。
My Floating School
My name is Sadia Khatun. I’m from Bangladesh. It’s difficult 1._______(walk ) on some roads in the rainy season
here.So how do I go to school? It’s easy! The school comes to me! I 2.________(study) on a “floating school”.
My floating school 3._______(be) a “school bus” and classroom all in one. The boat 4._______(pick) me up early
in the morning. Our classroom is on the boat too.
There 5.________(be) several boats on the river at the same time. Each boat 6.______(have) one teacher and one
class. The teacher 7.________(teach) us all the subjects.
The boat is long and wide. We sit at wooden desks. Big windows bring in lots of sunlight and fresh air. There
8. ________ (be)a blackboard at the front. There’s a computer next to it, and it gets its power from the sun. At the
end of the school day, the boat 9._______(take) me home.
I 10.________(learn) a lot at my school and have fun too. I love my floating school!
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专题03 一般现在时、句子种类、存在句(期末复习讲义)
单元
语法点
常考题型
命题趋势
Unit 1-6
一般现在时、句子种类、存在句
单项选择
语法选择
完形填空
语法填空
阅读写作等
1.注重素养:更加注重对学生英语核心素养的考查。
2.情境化突出:借助生活、学校、社会等多种情境,将语法考察与实际生活相结合。
3.文化传承与价值导向明显:注重选取具有文化内涵和思想价值的语篇。
知识点01 一般现在时
一、一般现在时的定义
一般现在时用于表示:
1、经常性或习惯性的动作(如日常生活、学习安排等)
2、客观事实或普遍真理(如科学规律、自然现象等)
3、现在的状态(如职业、性格、能力等)
例句:
I go to school every day.(习惯性动作)
The sun rises in the east.(客观真理)
She is a teacher.(现在的状态)
二、一般现在时常见标志词
常与下列时间状语连用:
1)always, usually, often, sometimes, hardly, never等频度副词。
如,They usually go to school by bike.
2)once a year, twice a week, every year/day/week等。
如,He writes to his father twice a month.
三、一般现在时的构成 :主语+动词原形/第三人称单数形式(三单)+----.
主语类型
谓语动词形式
例句
I / You / We / They / 复数名词
动词原形
They play football.
He / She / It / 单数名词
动词 + -s/-es(三单变化)
He watches TV every night.
所有主语
be动词(am/is/are)
She is happy.
【注意】是动词原形还是三单取决于主语,当主语是第三人称单数(he,she,it)时,谓语动词为三单,反之,则为动词原形。
如,He plays basketball everyday. I have noodles for breakfast.
动词原形变单三记住六个字母:s,es, ies.具体说,
1)一般情况直接在动词后加s,如,work- works, stay – stays
2)以s,x,ch,sh o,结尾的加es,如,watch- watches,finish- finishes
3)以辅音字母加y结尾加,如 study - studies
四、一般现在时的句式特点
句型
结构
例句
肯定句
主语 + 动词原形/三单形式
He reads books.
否定句
主语 + don't/doesn't + 动词原形
She doesn't like coffee.
一般疑问句
Do/Does + 主语 + 动词原形?
Do you speak English?
特殊疑问句
疑问词 + do/does + 主语 + 动词原形?
What does she eat for breakfast?
注意:
否定句/疑问句中,doesn't/don't 后的动词恢复原形(如:He doesn't play games.)
be动词的疑问句直接提前(如:Is she a teacher?)
易|错|点|拨
1、三单动词忘记加 -s
❌ She go to school. → ✅ She goes to school.
2、否定句/疑问句中动词未还原
❌ Does she likes music? → ✅ Does she like music?
3、be动词与实义动词混用
❌ She is likes apples. → ✅ She likes apples.
4、时间状语位置错误
❌ She goes to school every day on foot. → ✅ She goes to school on foot every day.
解|题|技|巧
根据用法和标志词判断时态。
Tom usually goes to school by bike. (usually→一般现在时主语Tom 三单→goes.)
【即时检测】
1. He _______ newspapers at 8:00 every evening.
A. reads B. is reading C. was reading D. has read
答案:A
解析:句中 every evening 是一般现在时的标志词,主语 He 是第三人称单数,谓语动词需使用第三人称单数形式 reads。
2. David _______ with his friends every weekend.
A. swims B. is swimming C. has swum D. was swimming
答案:A
解析:every weekend 表示习惯性、规律性的动作,要用一般现在时;主语 David 是第三人称单数,谓语动词用 swims。
3. The school bus picks up the students and _______ the forest.
A. goes over B. goes through C. went for D. go past
答案:B
解析:and 连接并列谓语,形式需与 picks 保持一致,因此排除 C(过去式短语)和 D(动词原形);go through 指“穿过(立体空间)”,符合“校车穿过森林”的语境,而 go over 意为“复习、仔细检查”,不符合句意。
4. My father is a tea lover. He often _______ tea after supper.
A. drinks B. was drinking C. will drink D. is drinking
答案:A
解析:often 是一般现在时的标志词,主语 He 是第三人称单数,谓语动词使用第三人称单数形式 drinks。
5. —Tina, what do you usually do at weekends?
—I _______ swimming with my friends.
A. went B. go C. will go D. have gone
答案:B
解析:问句中的 usually 表明询问的是习惯性动作,答句需用一般现在时;主语 I 是第一人称,谓语动词用原形 go。
知识点02 句子种类(Sentence Types)
英语句子按照用途可分为陈述句、疑问句、祈使句和感叹句四类,此处重点介绍陈述句和疑问句。
1. 陈述句
陈述句包括肯定结构和否定结构。在肯定结构中,谓语动词不含否定词;在否定结构中,系动词be、助动词或情态动词后加not(常用缩略形式),或用no、never等词表示。陈述句句末用句号。
陈述句的肯定式和否定式
肯定式
否定式
Ella's cap is in her schoolbag.
Ella's cap is not in her schoolbag.
He has some ping-pong bats.
He doesn't have any ping-pong bats.
They usually take showers in the morning.
They never take showers in the afternoon.
I can run fast.
I can't run fast.
2. 疑问句
疑问句包括一般疑问句、特殊疑问句、选择疑问句和附加疑问句。疑问句句末用问号。
六年级上册主要学习一般疑问句。
一般疑问句是在句子中用提问的方式提供一些信息,要求对方用Yes或No回答的疑问句。答语通常重复问句里的系动词be、助动词或情态动词,完全否定时口语中通常使用缩略词,如aren't、doesn't、can't。例如:
A: Is this your brother?
B: Yes, it is. / No, it isn't.
A: Do they have a pet dog?
B: Yes, they do. / No, they don't.
A: Does she like maths?
B: Yes, she does. / No, she doesn't.
A: Can you help me with this subject?
B: Yes, I can. / No, I can't.
一般疑问句的回答有时可以省去Yes或No,或者补充更多信息。例如:
A: Can I learn to play weiqi?
B: Sure, you can.
A: Do you want to join a club?
B: Yes, I want to join the music club.
【即时检测】
1.Here is your black tea. (变否定句)
Here ______ ______ your black tea.
2.The boy is from Chongqing. (改为一般疑问句)
______________________________
3.Ben likes flying the kite. (否定句)
Ben ______ ______ flying the kite.
4. It’s under the table. (改为否定句)
It ______ ______ the table.
5.Lily often watches TV on Sundays. (改为一般疑问句)
______ Lily often ______ TV on Sundays?
参考答案
1. Here is not your black tea.
2. Is the boy from Chongqing?
3. Ben does not / doesn’t like flying the kite.
4. It is not under the table.
5. Does Lily often watch TV on Sundays?
知识点03 存在句
“There is / are +某物/某人+某地/某时”结构表示“某地或某时有某物或某人”。
在这一结构中,there 没有实际意义,常弱读成/ðə/。句子中的系动词be和后面的名词在数的方面必须保持一致。
一般现在时中存现句的肯定式、否定式、疑问式和简略回答
句式
例句1
例句2
肯定式
There is a nice library behind the classroom building.
There are some pictures of famous people on the wall.
否定式
There is not (isn’t) any water in the bottle.
There are not (aren’t) any students in the classroom today.
疑问式和简略回答
Is there a whiteboard in your classroom?Yes, there is.No, there is not (isn’t).
Are there any plants or flowers in the room?Yes, there are.No, there are not (aren’t).
【注意1】 在存现句中,在有并列主语的情况下,往往根据第一个主语的单复数来确定系动词be的形式(就近原则)。例如:
There is a pen and two books on the desk.
There are two boys and a girl in the room.
【注意2】there be 和 have/has 区别
there be 和 have/has 都表“有”,区别在于: there be 侧重“某地/某时存在某物/某人”,强调存在状态,
主语是 be 后的名词(存在的事物),无生命也能用。
如,桌子上有一本书(There is a book on the desk)
河上有一些鸭子(There are some ducks on the river)。
have/has 侧重“某人/某物拥有某物”,强调所属关系。主语是拥有者,多和有生命的主体搭配,主语为第
三人称单数时用 has。
如,我有一本书(I have a book)。
她有一支新钢笔(She has a new pen)
我叔叔有一辆车(My uncle has a car)
易|错|点|拨(有则可以设计类似小栏目)
1、主谓一致错误
❌ There is two pens on the desk. → ✅ There are two pens on the desk.
2、 “就近原则”误解
❌ There are a girl and two boys in the park → ✅ There is a girl and two boys in the park
3、存在句与拥有句混淆
❌ There is she has a new bag. → ✅ She has a new bag .
❌ There has a new bag on the desk . → ✅ There is a new bag on the desk .
【即时检测】
1.— What’s on the desk?
— There ______ a pen and some English books.
A. is B. are C. be
答案:A
解析:there be 句型遵循“就近原则”,be动词的单复数由靠近它的名词决定,本句中靠近be动词的是单数名词 a pen,因此用 is。
2.There ______ some books and a pen on the desk.
A. is B. have C. are
答案:C
解析:there be 句型的“就近原则”,靠近be动词的是复数名词 some books,因此用 are;have/has 表示“拥有”,不能与 there be 连用。
3.There ______ some juice and apples on the table.
A. is B. are C. has
答案:A
解析:there be 句型的“就近原则”,靠近be动词的 some juice 是不可数名词,视为单数,因此用 is;has 不能与 there be 搭配。
4.—What’s in your schoolbag?
—There ______ a pencil box and some books in it.
A. are B. has C. is
答案:C
解析:there be 句型的“就近原则”,靠近be动词的是单数名词 a pencil box,因此用 is;have/has 不能和 there be 同时使用。
5. There ______ a lamp, two books, a computer and so on.
A. are B. is C. be
答案:B
解析:there be 句型的“就近原则”,靠近be动词的是单数名词 a lamp,因此用 is。
基础通关(测试时间:10分钟)
一、单项选择
1. —Are there any apples on the table?
—__________. But there are some oranges.
A. No, there isn’t B. Yes, they are C. Yes, there are D. No, there aren’t
答案:D
解析:问句用 Are there 提问,答句需用 there are/aren’t 回应;根据后句“但有一些橙子”可知桌子上没有苹果,要用否定回答,故选D。
2. —I'm getting hungry. Do you know where we can get some good food?
—Of course! There_________ a restaurant around the corner.
A. will be B. was C. is D. are
答案:C
解析:there be 句型,后面的名词 a restaurant 是单数;结合语境,这里描述的是客观存在的情况,用一般现在时,故选C。
3. It often___in summer here.
A. rain B. rains C. rainy D. raining
答案:B
解析:often 是一般现在时的标志词,主语 It 是第三人称单数,谓语动词需用第三人称单数形式 rains;rainy 是形容词,raining 是现在分词,均不能单独作谓语,故选B。
4. —Look at the monkeys. —Wow! They___so funny.
A. is B. am C. are D. be
答案:C
解析:主语 They 是第三人称复数,对应的be动词用 are;is 用于第三人称单数,am 用于第一人称单数 I,故选C。
5. — _______it often ___ in spring in Shanghai?
—Yes, it's often ___.
A. Is, rainy, rains B. Does, rainy, rain C. Does, rain, rainy D. Do, rain, rains
答案:C
解析:第一空,rain 是实义动词,主语 it 是第三人称单数,一般疑问句需用助动词 Does 开头;第二空,助动词后接动词原形 rain;第三空,is 后接形容词 rainy 作表语,故选C。
二、根据要求写出下列句子形式。
1.There are some apples. (改为单数句)
There ______ ______ apple.
2.I know a great restaurant. (变为否定句)
I ______ know a great restaurant.
3.There is a river in the forest. (改为否定句)
There ________ a river in the forest.
4.There are some ducks on the river. (改为一般疑问句)
______ there ______ ducks on the river?
5.Lily often watches TV on Sundays. (改为一般疑问句)
______ Lily often ______ TV on Sundays?
6.She gets up at 6:00 in the morning. (否定句)
She ______ ______ up at 6:00 in the morning.
7.There are some delicious food on the table. (改为否定句)
There ______ ______ ______ delicious food on the table.
答案:1. is; an 2. don’t 3. isn’t 4. Are; any 5. Does; watch 6. doesn’t; get 7. isn’t; any
拓展提高(测试时间:10分钟)
一、用所给单词的适当形式填空、
1. There ___________(be)twenty-four rooms in the building.
2.There________ (be) some bread on the table.
3. Mary ________ (go) to school by bus everyday.
4. My mother often ________ (wash) the clothes at the weekends.
5. My parents usually ________ (go) out for a walk after supper.
答案:1. are 2. is 3. goes 4. washes 5. go
二、阅读填空 , 用所给动词的适当形式填空。
My Floating School
My name is Sadia Khatun. I’m from Bangladesh. It’s difficult 1._______(walk ) on some roads in the rainy season
here.So how do I go to school? It’s easy! The school comes to me! I 2.________(study) on a “floating school”.
My floating school 3._______(be) a “school bus” and classroom all in one. The boat 4._______(pick) me up early
in the morning. Our classroom is on the boat too.
There 5.________(be) several boats on the river at the same time. Each boat 6.______(have) one teacher and one
class. The teacher 7.________(teach) us all the subjects.
The boat is long and wide. We sit at wooden desks. Big windows bring in lots of sunlight and fresh air. There
8. ________ (be)a blackboard at the front. There’s a computer next to it, and it gets its power from the sun. At the
end of the school day, the boat 9._______(take) me home.
I 10.________(learn) a lot at my school and have fun too. I love my floating school!
【答案 解析】
1. to walk
解析:固定句型 It’s + 形容词 + to do sth.,表示“做某事是……的”,此处用动词不定式。
2. study
解析:全文为一般现在时,主语 I 是第一人称,谓语动词用原形。
3. is
解析:主语 My floating school 是单数,一般现在时中 be 动词用 is。
4. picks
解析:主语 The boat 是第三人称单数,一般现在时中谓语动词用第三人称单数形式。
5. are
解析:there be 句型遵循就近原则,后面的 several boats 是复数,be 动词用 are。
6. has
解析:主语 Each boat 是单数,一般现在时中谓语动词用第三人称单数形式。
7. teaches
解析:主语 The teacher 是第三人称单数,一般现在时中谓语动词用第三人称单数形式。
8. is
解析:there be 句型就近原则,后面的 a blackboard 是单数,be 动词用 is。
9. takes
解析:主语 the boat 是第三人称单数,一般现在时中谓语动词用第三人称单数形式。
10. learn
解析:全文为一般现在时,主语 I 是第一人称,谓语动词用原形。
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