人教版七年级上册英语UNIT9
Unit 9 My favorite subject is science.Section A考点一subject Chicese, English, P.E.1.We have ______ every day.A. a ChineseB. ChineseC. the Chinese2.Her favorite subject is music. (对划线部分提问)________ ________ her favorite subject?3.—What’s your favorite subject? — _______________.A. BeijingB. ApplesC. ChineseD. Skirts4.— Is art your favorite subject? — ____________. I like math best.A. Yes, it isB. No, it isn’tC. It is my favoriteD. It isn’t my favorite5.— What is your favorite __________?— Music.A. foodB. fruitC. subjectD. color考点二favorite 与like…best1.--What's your favourite _______?—I like red best.A.bookB.movieC.color2.She likes green very much. (同义句)Her _________ _________ is green.3.I like science best.（同义句转换）Science is my _________ ________.4.What’s ________ favourite movie?A．he B．she C．he’s D．Gina’s考点三why与because1— _______ does she like English? — Because it is very interesting.A. WhatB. WhyC. WhenD. How2.I like music ________ it’s relaxing.A．why B．but C．and D．because3.______ do you like biology? It’s fun.A．What B．When C．Why D．How much4.He likes science ____________it's very interesting.A.andB.soC.because5.— _____________________ — Because I have so much homework to do.A. Are you busy?B. Do you have homework after school?C. Why are you so hungry?D. Why are you so busy?6.--_____ do you like music? ---Because it’s relaxing.A. WhyB. WhenC. Ho7.I like art ______ it's fun.A. whyB. whatC. howD. because8.—Why don't you like English? ―Because it's ________.A. interestingB. funC. excitingD. difficult9.He likes biology because it's interesting. (对划线部分提问)________ ________ he ________ biology?10.The girls like music because it's exciting.(对划线部分提问)______ ______ the girls like music?11.He likes the bag because he likes its color.( 对划线部分提问)________ does he _______ the bag?考点四Mr. Mrs. Miss, Ms. 的区别1.— Hello, Jerry. This is Mr Cooper’s wife (妻子).— Nice to meet you, ______________.A. Miss CooperB. Mr CooperC. Mrs CooperD. Cooper2.This is ______ Li. He has three children.A. SirB. MissC. MrsD. Mr考点五特殊疑问词who1.— ________ is your music teacher? — Mrs Brown.A. WhenB. WhatC. WhoD. Why2．--_____ is your P.E. teacher? --Mr. Deng.A. WhoseB. HowC. Who3.Mr Wang is his favorite teacher. (对划线部分提问)________ ________ his favorite teacher?4.That old man is my uncle. (对划线部分提问)______ ______ that old man?5.My science teacher is Mr. Wang.(对划线部分提问)_______ is ________ science teacher?考点六have 的多个用法有（区分there be）上课吃喝玩乐看Have breakfast/lunch/supperHave a classHave a restHave a good timeHave a look1. 我有个快乐的家。
_________________2. 我们班有好多有趣的书。
_______ ________ many _______ books in our classroom.3. 我们今天有四节课。
We ______ four ________ today.4. 今天我玩的好开心。
I_______ _______ _______ ________ today.5.There _____ three students and a teacher in the classroom.A. areB. isC. beD. am6.There _____ a teacher and three students in the classroom.A. areB. isC. beD. am7.We have ________ every day.A. a ChineseB. ChineseC. the ChineseD. Chineses考点七but , and , or的区别1.Linda likes singing ______ she can sing quite well.A. andB. butC. soD. then2. — What kind of movies does Maria like?—She likes thrillers, _____ she doesn’t like action movies.A. andB. butC. becauseD. or3.Mary works from 8:00 am to 6:00 pm, _______ she is very tired.A. butB. soC. becauseD. before4.We have math ________ Friday. It’s difficult ________ interesting. A．on, but B．on, and C．in, or D．in, and综合练习一句型转换1.My favourite subject is English.(对划线部分提问)2.Her mother's favourite color is blue.(对划线部分提问)3.He likes art because it's fun.(对划线部分提问)4.Our teacher is very strict.(改否定句)5.Mike has P.E.on Thursday.(对划线部分提问)6.He likes some subjects.(改一般疑问句)综合练习二汉译英1.我喜欢科学，它有点难，但是很有趣。
I like ____________.It's ____________,but it's ____________.2.午饭后我上音乐课。
____________ lunch,I ____________ music.3.我们所有的课程4：30结束。
All our ____________ finish ____________ 4:30.4.我喜欢和我的小狗Nike玩。
I like to ____________ ____________ my dog Nike.5.我什么学科都不喜欢，就喜欢历史。
I ____________ ____________ any subject.I only like ____________.综合练习三(每句话中有一个错误，请找出并改正)1.Hu Jie favorite subject is science.2.Why does Xiang Yu and you like math?3.After class I have gymnastics at two hours.4.I like me music teacher,Miss Tian.5. Math is difficult,and interesting.Section B考点一星期几的表达与问询，与问日期的区别1.—What day is it today?—It's ____________.A.MondayB.summerC.November 112.—______ is it today? —It's Sunday.A. What dayB. What aboutC. What timeD. What color3.―________?―It's Thursday.A. What's the timeB. What day is it todayC. Is it ThursdayD. What's the date4.—What is the date today?—___________.A.It’s June 2ndB.It's the May 5th, 1995C.It’s SundayD.It’s Tuesday5.—______ is your mother’s birthday?—It’s February 8th.A. What timeB. WhenC. HowD. What6.We have science on Tuesday and Thursday. (对划线部分提问)________ do ________ ________ science?考点二介词from, to考点三介词on, at. 时间问询1.We have math ____________ Monday.A.inB.onC.at2.All my classes finish ____________ 4:00 p.m.A.inB.onC.at3.—What time is it?—It's ____________.A.eleven o'clockB.eight thirty o'clockC.nine years old4.—When do you finish your classes?—____________ about 5:00.A.AtB.InC.On5.He has math ____________ Monday and Thursday.A.inB.onC.at6.What time do you usually get up?— _______________A. On Friday.B. In July.C. In the morning.D. At 6:15 am.7.I have P.E. ________ the afternoon of Tuesday.A. inB. forC. onD. at8.They have a party ______ Saturday afternoon.A. onB. atC. inD. of9.I have breakfast ______ 6:30 every morning.A. at aroundB. around atC. in aroundD. around in10.--________do you have P.E.? ---On Monday afternoon.A. WhyB. HowC. When11.They have PE________ the afternoon of Thursday.A. atB. onC. in12.I have breakfast _____ 6:30 every morning.A. at aroundB. around atC. in around13.It is ________ eight o’clock now. I must (必须) go to school.A. atB. /C. toD. for14.—Why don’t you like math? — _____________________A. Because it is interesting.B. Because it is so boring.C. No, I don’t.D. Yes, I do.15.We usually have math ______ the morning of Monday.A. inB. onC. atD. of16.I often do my homework ______ the evening. But I watch TV ______ Saturday evening.A. in; atB. in; onC. on; atD. in; at17.When do you go to bed every night? (改为同义句)______ ______ do you go to bed every night?18.He goes to bed at about ten.(对划线部分提问)________ _______ does he go to bed?考点四介词for 的用法1.Every day I can play computer games ____________ one hour.A.onB.forC.at2．I will have _____ art lesson ________ two hours.A. a, atB. an, forC. a, forD. an, at考点五finish 的用法1.你在九点完成作业吗？Do you ______ ______ ______ at nine?2.我的课在1点结束。
Unit9单元高频考点总结课件2022-2023学年人教版七年级英语上册
最高级的变化。
例句：--What subject do you like best?
--My favorite subject is math. 我最喜欢的学科是数学。= I like math best.
--What’s Gina’s favorite subject? Gina最喜欢的学科是什么？
高频考点精讲
考点13：
good相关短语
1. be good with sb 和某人相处得好（同义get on well with sb.）
例句：He must be good with kids.他肯定能和孩子相处得好。
2. be good to sb 对某人好
例句：My friend was good to me when I was ill.我生病时我的朋友对我关怀备至。
play soccer 踢足球
高频考点精讲
考点11：
join / take part in / join in
1. join多指参加某个团体或组织，成为其中的一员join the Party入党；join the army参军
例句：He joined the photography club last week.他上周加入了摄影俱乐部。 Mary joined the debate team.玛丽加入了辩论队。
① talk to sb. 对某人说话 ② talk with sb 同某人交谈 ③ talk about/on… 谈论……
4）tell“告诉，讲述”。常用的结构：
① tell sb. sth. = tell sth. to sb. 告诉某人某事 ② tell sb. about sth. 告诉某人关于某事 ③ tell sb. to do sth. 告诉某人去做某事 tell sb. not to do sth. 告诉某人不要做某事 ④ tell a story 讲故事tell a lie 撒谎tell the truth讲实话
Unit9 重点知识复习课件 人教版英语七年级上册
Unit 9 My favorite subject is science.
基础夯实
【重点单词短语过关】 读一读 背一背
favorite /'feivərit/ adj.&n.特别喜爱的 (人或事物) subject /'sʌbdʒekt/ n. 学科;科目 science /'saiəns/ n. 科学
单词和短语精讲
(4)连接两个不同的名词，如：She moved from a house to a building. 她从平房搬到了楼房。 It’s quite a long way from Beijing to Guangzhou.从北京到广州有很长一段路。 (5)连接两个反义的名词，如：We’ve been working from morning to night. 我们从早工作到晚。 (含有这种搭配的词组还有：from first to last自始自终;from start to finish从开始到结束;from beginning to end从头到尾;自始自终;全部 ;from top to bottom从头到尾;从顶到底) (6)接表示地点的副词和名词，如：It’s only two hundred metres from here to my home. 从这里 到我家仅有两百米远。
单词和短语Leabharlann 讲3.from...to... 从......到......的用法。 from…to…”是英语中极其常用的介词短语，表示“从…到…”，其用法很多，搭配能力也很 强。本文现就其搭配形式归纳如下： (1)连接两个不同的数词 例如： Can you count from one to a hundred? 你能从一数到一百吗? Men from 16 to 30 are to be drafted into the army. 16岁到30岁的男子均应该应征入伍。 (2)接两个不同的数字，用于复数名词前， 例如：The work should take us from two to three hours. 这工作要用去我们2至3小时。 The nursery is open to children from 2 to 6 years old. 这所幼儿园对2岁到6岁之间的儿童 (3)连接两个相同的名词 例如：The paper was passed from hand to hand. 这份文件从一个人手里传到另一个手里。
人教版七年级上册Unit 9 及答案
Unit 9 My favorite subject is science.一重点单词1.形容词“最喜爱的”:___________2.Chinese ---- 中国______________3.interesting = ______ ----反义词________4.difficult ----反义词____________5.busy ----反义词_____________6.class “课” ----复数____________7.星期一_____________ 8. 星期二______________________ 9.星期三_____________ 10. 星期四______________________ 11. 星期五______________ 12. 星期六_________13. 星期日_____________ 在星期几：__________+______________12. 特殊疑问词：什么______ 谁______ 为什么______ 什么时候______二重点短语1. 上体育课__________2. 音乐老师__________3. 玩游戏___________4. 第二天_____________5. 的确如此___________6.在星期一_________7. 从…到…______________8. 一节美术课____________9. 为…而感谢_______________ = _______________10. 在上午8点________三重点句型1. 你最喜爱的科目是什么？________________________ 回答___________________他最喜爱的科目是什么？________________________ 回答__________________ 她最喜爱的科目是什么? ________________________ 回答___________________ Jim 最喜爱的科目是什么？______________________ 回答___________________ _________________________________________ + favorite2.为什么他喜欢科学？_______________________回答_____________________________________为什么他们喜欢英语？_______________________________回答________________________________________3.谁是Bob的地理老师？________________________回答________________________________________4.你今天过得好吗？___________________________回答_______________________________________5.你的美术课是什么时候？______________________回答_________________________________________检测题一单选题( ) 1. ----____ is P.E. your favorite subject?----Because it’s fun.A. WhatB. whyC. WhenD. How( ) 2. ----What’s your favorite ____?----History.A. sportB. colorC. foodD. subject( ) 3. Art is ____ interesting subject.A. aB. theC. anD. /( ) 4. _____ is Mr. Zhang your favorite teacher?A. WhoB. WhatC. WhyD. When( ) 5. We have English and math ___ the morning of Monday.A. inB. onC. atD. with( ) 6. Does Mr. Wang teach ____ music?A. IB. weC. usD. our( ) 7. We have three classes ____ the afternoon. We don’t have any classes ___ Sunday.A. in; onB. on; inC. at; onD. on; on( ) 8. What ____ your favorite subject?A. hasB. areC. isD. have( ) 9. Ken doesn’t like history, _____ it’s boring.A. becauseB. butC. andD. or( ) 10. ----Bill, what’s your sister’s favorite ____ ?----She likes volleyball best.A. foodB. colorC. sportD. movie( ) 11. We have P.E. from 10:00 ____ 11:00.A. atB. toC. andD. in( ) 12. ----____ do you have music?----I have music on Tuesday and Wednesday.A. WhatB. HowC. WhereD. When( ) 13. ----Is John’s favorite day Sunday?----___________.A. No, it isB. Yes, he isC. Yes, it isD. No, he isn’t ( ) 14. Mr. Li teaches ____ math. We all like ____ very much.A. us; herB. our; herC. us; himD. our; him ( ) 15. ----___ does your music teacher come?----At 9 o’clock.A. WhenB. WhatC. WhoD. Why( ) 16. ----What day is it today?----It’s __________.A. 8 o’clockB. October 1stC. TuesdayD. busy二用所给词的适当形式填空1. Why _____ he _____ (like) math?2. This book is very ________ (interest). I like it very much.3. What’s your _______ (sister) favorite subject?4. _____ (he) favorite fruit is apple.5. I want _______ (be) a teacher.6. Monday is the ______ (two) day of a week.7. History is very ________ (bore).8. Let _____ (we) help you. 9. Thanks for _______ (help) us.10. _____ (I) favorite day is Saturday.11. On Monday, Jim has two Chinese _________ (calss).三根据汉语提示完成句子1. We always __________________ (上英语课) on Tuesday.2. Jim likes _________________ (做游戏) with his classmates.3. I like Friday because _________________ (第二天) is Saturday.4. Hi, Bob! _________________________(你今天做得好吗)？5. Mary’s _________________ (语文课) is on Thursday.6. My __________________(音乐老师) is Ms. Brown.7. ___________________ (为…而感谢) your e-mail.四句型转换1.Mr. Li is my art teacher. (对划线部分提问)__________________________________2.I have a sister and brother. (改为否定句)____________________________________3.Jim likes music because it’s relaxing. (对划线部分提问)_________________________4.My favorite subject is science. (对划线部分提问)______________________________5.Mary has English class on Wednesday. (改为否定句)____________________________五翻译句子1. 我想在星期一去上学。
人教版七年级英语上册Unit9教学设计
2.通过学习节日的主题，引导学生关爱家人，珍惜亲情，培养良好的家庭观念。
3.培养学生尊重、理解不同文化的态度，提高学生的跨文化交际能力。
4.激发学生学习英语的兴趣，培养学生的自信心和自主学习能力，为今后的英语学习奠定基础。
本教学设计旨在让学生在学习英语的同时，了解和传承中华传统文化，提高学生的英语综合运用能力，培养学生的合作精神、家庭观念和跨文化交际能力，为学生的全面发展奠定基础。
-提供多元化的作业形式，以满足不同学生的学习需求和兴趣。
4.预习作业：
-预习下一节课的内容，提前了解相关的话题和知识点，为新课的学习做好准备。
-收集与新课相关的词汇和短语，尝试构建简单的句子，为课堂讨论和展示打下基础。
作业布置原则：
-确保作业与课堂学习内容紧密结合，有助于学生巩固知识点。
-注重培养学生的实际应用能力，鼓励学生在生活中使用英语。
-作业难度适中，既能激发学生的学习兴趣，又能适当挑战学生的能力。
人教版七年级英语上册Unit9教学设计
一、教学目标
（一）知识与技能
1.学生能够掌握并正确运用本章节的重点单词和短语，如：重阳节（Double Ninth Festival）、月饼（mooncake）、赏月（enjoy the full moon）、团圆（reunion）等，并能将这些词汇运用到日常交流中。
2.难点：
-一般现在时和一般过去时的区别与运用，尤其是对于动词形式的掌握。
-学生在口语交流中，如何灵活运用所学词汇和句型，表达个人对节日的看法和经历。
-在实际语境中，如何正确运用目标语言进行有效沟通。
（二）教学设想
1.针对重点内容的教学：
Unit9知识归纳人教版英语七年级上册
Unit 9 My favorite subject is science.短语归纳1.favorite subject 最喜欢的学科2.P.E. teacher体育老师3. play games with sb.和某人一起玩游戏4. the next day 第二天5. Chinese class 语文课（名词短语）6. have math 上数学课（动词短语）7. have an art lesson 上一节美术课8. for two hours 长达两小时9. for sure 无疑;肯定10. soccer game 足球比赛11. from...to...从到12. be busy忙碌13. after that 在那之后14. on Wednesday 在星期三用法集萃1.have+学科名词上课2.finish doing sth. 做完某事3.on+星期几在星期几4. Let's do sth. 咱们做某事吧。
5. Is that OK with you? 那对你来说合适吗?6. Thank you for... 为·..而感谢你。
7. want to do sth. 想要做某事8. be OK with ..... 适合.....9. How’s your day? 你今天过得如何?10. What's one’s favorite...? 某人最喜欢的...是什么?(What’s Bob’s favorite sport? Bob 最喜欢的运动是什么？)11.One’s(形容词性物主代词/名词所有格) favorite...is/are... 某人最喜欢的....是..... (Bob’s/His favorite sport is tennis. Bob/他最喜欢的运动是网球。
)12. Why do/does sb. like...? 某人为什么喜欢..………·？Because.... 因为.....( Why do you like math? 你为什么喜欢数学？Because it is easy. 因为它很简单。
七年级英语Unit 9 Come and meet the family(来见见我的家人吧)人教版+朗文知识精讲
æ 七年级英语Unit 9 Come and meet the family （来见见我的家人吧）人教版+朗文【同步教育信息】一. 本周教学内容：Unit 9 Come and meet the family （来见见我的家人吧） 1. 语音：⎩⎨⎧pa m t a h ][te a k me a n [ei]a⎩⎨⎧oxb us b [b]b pjee icture p [p]p ⎩⎨⎧d g o oo w n d [d ]d t b o a tm e e [t ]t 2. 词汇：family ，grandmother ，grandma ，grandfather ，grandpa ，dad ，wife ，husband ，daughter ，son ，parent ，parents ，big ，England ，aunt ，uncle ，afternoon ，do ，How do you do ? seat ，have a seat ，like ，look like ，doctor ，worker ，family tree ，hat ，guess 3. 语法：（1）祈使句（2）名词所有格 4. 交际用语：Go and see I think it’s … Nice to meet / see you . How are you ? How do you do ? Good afternoon . Please come in . Please have a seat . Hello , Mimi ! You look like Lucy’s hat .二. 教学重难点：1. 掌握单数名词的所有格形式。
2. 掌握祈使句的用法。
三. 课文内容分析：1. Come and meet the family .come and meet ——来见见，and 连接两个并列的动词come 和meet 。
人教版七年级上册《Unit 9 My favorite subject is science》课件
Why does she like P.E.? Because it’s exciting.
3a
Complete the conversation with the words in the box. You can use some of the words two times.
➢ geography 地理 ➢ biology 生物 ➢ art 美术 ➢ music 音乐 ➢ computer 电脑
➢ P.E. 体育
music Chinese biology politics
math English
P.E. geography
art science
history
地理 政治 数学 英语 语文 艺术 体育 生物 音乐 历史 科学
My favorite subject is music. Because it’s relaxing.
What’s his/her favoritesubject? Why does he/she like …?
Grammar Focus
What’s your favorite subject? My favorite subject is math.
favorite adj. 最喜欢的,后面加名词 = like…best
eg: favorite color/food/clothes 喜爱的颜色/食物/衣服
句型:What’s your/his/her/their favorite+名词？ 回答:My/His/Her/Their favorite+名词+ is… eg: What’s your favorite subject?
Unit9基础知识讲解与练习人教版七年级英语上册
人教版初中英语七年级上册Unit9基础知识讲解与练习Unit 9 知识讲解 A一．favorite1. favorite adj. “最喜欢的，特别喜欢的”，也写作favourite.Sunday is our favorite day. We can go to the park.2. favorite相当于like...best。
H er favorite fruit is strawberries. = She _______ strawberries _______.Their favorite day is Sunday. = They __________ Sunday _______ .3. favorite n. “最喜欢的人或物”，其复数形式是favorites.These books are my favorites. 这些书是我最喜欢的。
二. science n. 科学，是不可数名词。
当它指理科的一门学科时，是可数名词。
Science is my favorite subject. 科学是我最喜欢的科目。
相关单词：n. scientist 科学家Edison is a great scientist. 爱迪生是位伟大的科学家。
三．subject n．1. 学科；科目____________________ 多少门学科do you learn at school?2. subject n. 主题The subject of the poem is friendship.这首诗的主题是友谊。
3. subject n. 主语I don't know the subject of the sentence. 我不知道这个句子的主语。
四．P. E. n.（＝physical education）体育，注意它和运动sport的区别have P.E.=have a P. E.class上体育课；play sports做运动eg:They like P. E. class．他们喜欢体育课。
Unit9(单元知识清单)七年级英语上册(人教版)
Unit 9 My favorite subject is science?知识清单Section A重点单词1.favorite (= favourite)特别喜爱的(人或事物)subject学科；科目2.science科学3.P.E.(= physical education)体育4.music音乐；乐曲5.math (= maths)数学6.geography 地理(学)7.why为什么8.Monday 星期一Saturday星期六9.Chinese语文；汉语；汉语的；中国的10.history历史11.because因为12.Friday星期五重点词组1.favorite subject 最喜欢的学科2.play games玩游戏3.the next day第二天4.for sure无疑;肯定5.science teacher科学老师重点句型1.What's your favorite subject? 你最喜欢的学科是什么?2.Why do you like PE.?你为什么喜欢体育?3. 4.How's your day?你今天过得如何?4. 5.I like Monday because I have P E. and history.我喜欢星期一，因为我上体育课和历史课Section B重点单词1.free空闲的2.Tuesday星期二Thursday星期四3. A.M.(=a.m.)上午4.cool妙极的;酷的5.Wednesday星期三6.Sunday星期日7.PM.(=p.m.)下午;午后eful有用的;有益的9.from(表示开始的时间)从.....开始10.Mrs.(用于女子的姓或姓名前)太太;夫人11.finish 完成;做好12.lesson课;一节课13.hour小时重点词组1.the same as...和......一样2.on Friday在星期五3.have history上历史课4.after that 在那之后from...to... 从...到.....5.thank for.. 为.....感谢你重点句型1.I am very busy on Friday. 在星期五我很忙2. The teacher says it is useful, but I think it is difficult.老师说它是有用的，但是我认为它很难3. Lunch is from 12:00 to 1:00...从12点到1点是午餐(时间)......4. My classes finish at 1: 50, but after that l have an art lesson for two hours.我(学校)的课(下午)1:50结束，但随后我要上两个小时的美术课5. Is that OK with you? 那对你来说合适吗?Section A知识点精讲1.What's your favorite subject?你最喜欢的学科是什么?要点1What's one's favorite...? 意为“某人最喜欢的......是什么?”，相当于“What...do/does sb. like best?”，用来询问某人最喜欢的人或事物是什么。
人教版初中英语七年级上册Unit9基础知识评析
人教版初中英语七年级上册Unit9基础知识评析Unit9 My favorite subject is science.1.P.E.体育（P.49）释：P.E.名词，意为“体育”，是physical education的缩略形式。
英语中，有许多单词，把首字母大写或其中的某个字母大写构成缩略词。
释：science 当“科学”讲时时不可数名词。
当它指理科的一门学科（如生物、化学、物理）时，是可数名词。
例如：I have science on Monday.星期一我有科学。
【拓展】scientist名词，意为“科学家”。
例如：Qian Xuesen is a great scientist.钱学森是一名伟大的科学家。
3. What‘s your favorite subject?你最喜欢的学科是什么？（P.49）释：①favorite此处用作形容词，意为“最喜欢的，最喜爱的”，相当于“like……best”。
因此，上句可与What subject do you like best?相互转换。
例如：Tom’s favorit sport is running.=Tom likes running best.汤姆最喜爱的运动是跑步。
Sunday si our favorite day.=I like Sunday best..星期天是我们最喜欢的一天.What’s Mary’s favorite subject.=What subject does Mary like best?玛丽最喜欢的学科是什么？【拓展】favorite 还可用作名词，意为“最喜欢的人或物”，其复数形式是favorites.例如：These clothes are my favorites. 这些衣服是我最喜欢的。
What color is your favorite?哪种颜色是你最喜欢的？②subject可数名词，意为“学科，科目”。