资源简介 2025 秋人教英语四年级上册 讲义知识讲解(一)人物外貌与性格类strong /str /:强壮的,形容人的身材健壮有力。如:My brother is strong. He can carry heavy things.(我哥哥很强壮,他能搬重物。)tall /t l/:高的,用于描述人的身高。My father is tall.(我爸爸很高。)short / t/:矮的;短的,形容人身材不高或物体长度较短。He is short.(他很矮。) Her hair is short.(她的头发很短。)thin /θ n/:瘦的,指人的身材苗条。The boy is thin.(这个男孩很瘦。)kind /ka nd/:友好的;和蔼的,描述人的性格友善。Our teacher is kind. She always helps us.(我们的老师很和蔼,她总是帮助我们。)quiet / kwa t/:文静的;安静的,形容人安静、不爱说话。The girl is quiet. She likes reading books.(这个女孩很文静,她喜欢看书。)(二)其他hair /he (r)/:头发,不可数名词。She has long hair.(她有长发。)best /best/:最好的,是 good 的最高级形式。常与 friend 搭配,best friend 表示 “最好的朋友”。Tom is my best friend.(汤姆是我最好的朋友。)Chinese / t a ni z/:作名词时,意为 “中文;中国人”;作形容词时,意为 “中国的” 。I like Chinese food.(我喜欢中国食物。)He is Chinese.(他是中国人。)read /ri d/:阅读,常见短语 read books(读书)。I often read books in the evening.(我晚上经常读书。)play /ple /:常见义项有 “玩耍;参加(体育运动等)”。We play games after school.(放学后我们玩游戏。)I play basketball on weekends.(我周末打篮球。)game /ɡe m/:游戏,常用短语 play games(玩游戏) 。Let's play a game.(我们玩个游戏吧。)football / f tb l/:足球运动,play football(踢足球),注意球类运动前不加定冠词 the 。They play football every Sunday.(他们每个周日都踢足球。)both /b θ/:两者都,用于两者之间,常位于 be 动词之后,实义动词之前。We both like music.(我们俩都喜欢音乐。)always / lwe z/:总是;一直,表示频率很高,常用于一般现在时,位于实义动词前,be 动词、助动词或情态动词后。He always gets up early.(他总是很早起床。)第 1 页共 9 页2025 秋人教英语四年级上册 讲义basketball / bɑ sk tb l/:篮球运动,play basketball(打篮球)。I play basketball with my friends.(我和朋友们一起打篮球。)(一)询问朋友姓名:What's your friend's name (你的朋友叫什么名字?)回答:His/Her name is...(他 / 她的名字是……) 。例如:What's your friend's name - His name is Zhang Peng.(你的朋友叫什么名字? - 他的名字是张鹏。)(二)描述朋友外貌:He's/She's + 形容词.(他 / 她是…… 样的);He/She has + 形容词 + 名词.(他 / 她有…… 的……)例如:He's tall and strong.(他又高又壮。)She has long hair.(她有长发。)(三)询问最好的朋友:Who's your best friend (谁是你最好的朋友?)回答:Sb. is my best friend.(某人是我最好的朋友。);Sb.(某人). She/He is...(她 /他是……) ,例如:Who's your best friend - Chen Jie. She's funny.(谁是你最好的朋 友? - 陈杰。她很有趣。)(四)描述与朋友一起做的事:Sb. often + 动词短语 + with me.(某人经常和我一起做某事)例如:He reads books with me.(他和我一起读书。)We play games together.(我们一起玩游戏。)(五)表达喜欢朋友及朋友也喜欢自己:I like my friend. My friend likes me.(我喜欢我的朋友。我的朋友也喜欢我。)(六)选择疑问句:A boy or girl (男孩还是女孩?)回答时直接选择其中一项,如:A boy.(一个男孩。)字母组合“sh” 发/ / 音:发音时,舌头靠近上颚,气流从舌头和上颚之间的缝隙挤出,摩擦成音。常见单词有:fish(鱼)/f /、ship(船)/ p/、shop(商店)/ p/、 English(英语)/ ɡl /、she(她)/ i /、share(分享)/ e (r)/ 。可以通过朗读含有“sh” 的单词和句子,如“I have no shell. Can we share ” 来加深对该发音的记忆。(一)形容词描述人物外貌和性格:学会运用 tall(高的)、short(矮的;短的)、strong(强壮的)、thin(瘦的)、kind(友好的)、quiet(文静的)等形容词描述朋友的外貌和性格特 点。注意形容词在句中的位置,一般放在 be 动词后作表语,或放在名词前作定语 。例如:The tall boy is my brother.(那个高个子男孩是我哥哥。)My friend is kind.(我的朋友很友好。)第 2 页共 9 页2025 秋人教英语四年级上册 讲义(二)动词第三人称单数形式:在一般现在时中,当主语是第三人称单数(he/she/it 或单个人名等)时,动词要变成第三人称单数形式。变化规则如下:一般动词在词尾加 -s,如:like - likes,play - plays,read - reads 。以 -s、 -x、 -sh、 -ch、 -o 结尾的动词,在词尾加 -es,如:watch - watches,wash - washes,go - goes 。以辅音字母 + y 结尾的动词,先变 y 为 i,再加 -es,如:study - studies 。特殊变化:have - has 。例如:He likes reading books.(他喜欢读书。)She often plays football.(她经常踢足球。)(三)both 的用法:both 表示 “两者都”,用于两者之间。常见用法有:both + 名词复数,如:Both boys like sports.(两个男孩都喜欢运动。)both of + 代词宾格 / 名词复数,如:Both of them are students.(他们两个都是学生。)置于 be 动词后,实义动词前,如:We are both happy.(我们俩都很开心。)We both like English.(我们俩都喜欢英语。)(四)选择疑问句:结构为 “一般疑问句 + or + 选择部分?”,回答时不能用 yes 或 no,要直接回答选择的内容。注意 or 连接的两个部分在语法和逻辑上要保持一致,如:Is he tall or short (他高还是矮?)第 3 页共 9 页2025 秋人教英语四年级上册 讲义配套练习(一)选择题(20 道)My friend is . He can play basketball well.strong B. thin C. short答案:A 解析:能打好篮球通常意味着身体强壮,“strong” 表示强壮的;“thin” 是瘦的;“short” 是矮的。结合语境,选 A。—What's your friend's name — name is Sarah.She B. Her C. Hers答案:B 解析:这里需要一个形容词性物主代词来修饰 “name”,“She” 是主格;“Hers” 是名词性物主代词;“Her” 是形容词性物主代词,所以选 B。My best friend long hair.have B. has C. is答案:B 解析:“My best friend” 是第三人称单数,一般现在时中,动词要用第三人称单数形式。“have” 的第三人称单数是 “has”,“is” 意思是 “是”,不符合语境,所以选 B。He's tall strong.but B. and C. or答案:B 解析:“tall” 和 “strong” 是并列描述人物特征的词,用 “and” 连接;“but” 表示转折;“or” 表示选择。所以选 B。—Who's your best friend —She is tall. B. Chen Jie. C. She likes reading.答案:B 解析:问题是询问最好的朋友是谁,A 选项描述外貌,C 选项描述爱好,B 选项“Chen Jie” 是具体的人,符合题意,所以选 B。We often games together.play B. plays C. playing答案:A 解析:“We” 是复数主语,一般现在时中动词用原形,“plays” 是第三人称单数形式,“playing” 是现在分词形式,所以选 A。My friend likes books.read B. reads C. reading答案:C 解析:“like doing sth.” 是固定搭配,表示喜欢做某事,所以选 C。your friend a boy or a girl Is B. Are C. Am答案:A 解析:“your friend” 是第三人称单数,be 动词用 “is”;“Are” 用于复数;“Am” 用于第一人称单数 “I”。所以选 A。第 4 页共 9 页2025 秋人教英语四年级上册 讲义My friend and I like music.both B. all C. too答案:A 解析:“both” 表示两者都,用于两者之间;“all” 表示三者或三者以上都;“too” 表示也,用于句末。这里是 “我朋友和我” 两者,所以选 A。She always me with my English.help B. helps C. helping答案:B 解析:“She” 是第三人称单数,一般现在时中动词要用第三人称单数形式,“help” 的第三人称单数是 “helps”,“helping” 是现在分词形式,所以选 B。I like sports. My friend likes sports, .too B. also C. either答案:A 解析:“too” 表示也,用于肯定句末;“also” 表示也,用于句中;“either” 表示也,用于否定句末。本句是肯定句且在句末,所以选 A。My best friend is very . She often makes me laugh.kind B. funny C. quiet答案:B 解析:能让人笑说明很有趣,“funny” 表示有趣的;“kind” 是友好的;“quiet” 是文静的。所以选 B。is my friend. He's from China.His B. Him C. He答案:C 解析:句子缺少主语,要用主格形式,“His” 是形容词性物主代词;“Him” 是宾格;“He” 是主格。所以选 C。My friend football after school.play B. plays C. playing答案:B 解析:“My friend” 是第三人称单数,一般现在时中动词要用第三人称单数形式,“play” 的第三人称单数是 “plays”,“playing” 是现在分词形式,所以选 B。We like animal books.both B. all C. every答案:A 解析:“both” 表示两者都,“all” 表示三者或三者以上都,“every” 表示每个。这里是“我和朋友” 两者,所以选 A。My friend has eyes.big B. bigger C. biggest答案:A 解析:这里没有比较的意思,用形容词原级 “big”;“bigger” 是比较级;“biggest” 是最高级。所以选 A。My best friend often pictures with me.draw B. draws C. drawing答案:B 解析:“My best friend” 是第三人称单数,一般现在时中动词要用第三人称单数形式,“draw” 的第三人称单数是 “draws”,“drawing” 是现在分词形式,所以选 B。I have a friend. name is John.He B. His C. Him答案:B 解析:“name” 是名词,前面要用形容词性物主代词修饰,“He” 是主格;“Him” 是宾格;“His” 是形容词性物主代词。所以选 B。第 5 页共 9 页2025 秋人教英语四年级上册 讲义My friend is good at basketball.play B. plays C. playing答案:C 解析:“be good at doing sth.” 是固定用法,表示擅长做某事,所以选 C。She's and kind.friend B. friendly C. friends答案:B 解析:“and” 连接两个并列的形容词,“friend” 是名词;“friendly” 是形容词,意为友好的;“friends” 是名词复数。所以选 B。二、完型填空(20 道)I have a good 1 . Her name is Liu Ying. She is 2 . She has 3 hair. She is 4 and kind. We are in the 5 class. We often 6 together.We like 7 books. We both like 8 . She often 9 me with my Chinese.And I often help her 10 her English. We also like 11 games. On weekends, we often 12 football. She 13 football very well. She 14 likes singing. She often 15 songs after school. We 16 each other. We are 17 best friends. We always 18 happy together. I'm 19 to have such a good friend. I hope our 20 will last forever(永远).A. friend B. friends C. sister答案:A 解析:根据后文对 “她” 的描述可知是介绍朋友,“a” 后用单数名词,所以选 A。A. tall B. short C. Both A and B答案:C 解析:选项 A “tall”(高的)和选项 B “short”(矮的)都可描述朋友外貌,所以选 C,表示两者都有可能。A. long B. short C. Either A or B答案:C 解析:“long”(长的)和 “short”(短的)都能形容头发,所以选 C,表示两者都有可能。A. friendly B. friend C. friends答案:A 解析:这里需要一个形容词描述性格,“friendly” 是形容词,意为友好的;“friend” 是名词;“friends” 是名词复数。所以选 A。A. same B. different C. another答案:A 解析:“in the same class” 表示在同一个班级,“different” 是不同的;“another” 是另一个。所以选 A。第 6 页共 9 页2025 秋人教英语四年级上册 讲义A. plays B. play C. playing答案:B 解析:“We” 是复数,一般现在时中动词用原形,所以选 B。A. read B. reads C. reading答案:C 解析:“like doing sth.” 表示喜欢做某事,所以选 C。A. animal B. animals C. an animal答案:B 解析:“like” 后接可数名词复数表示喜欢一类事物,“animal” 的复数是 “animals”,所以选 B。A. help B. helps C. helping答案:B 解析:“She” 是第三人称单数,一般现在时中动词要用第三人称单数形式,所以选B。A. with B. for C. at答案:A 解析:“help sb. with sth.” 是固定搭配,表示在某事上帮助某人,所以选 A。A. play B. plays C. playing答案:C 解析:“like doing sth.” 表示喜欢做某事,所以选 C。A. play B. plays C. playing答案:A 解析:“we” 是复数,一般现在时中动词用原形,所以选 A。A. play B. plays C. playing答案:B 解析:“She” 是第三人称单数,一般现在时中动词要用第三人称单数形式,所以选B。A. too B. also C. either答案:B 解析:“too” 表示也,用于肯定句末;“also” 表示也,用于句中;“either” 表示也,用于否定句末。本句是句中表示也,所以选 B。A. sing B. sings C. singing答案:B 解析:“She” 是第三人称单数,一般现在时中动词要用第三人称单数形式,所以选B。A. like B. likes C. liking答案:A 解析:“We” 是复数,一般现在时中动词用原形,所以选 A。A. each other B. each others C. each other's答案:C 解析:“each other's” 表示彼此的,后接名词;“each other” 表示彼此;“each others”表达错误。所以选 C。A. are B. is C. am答案:A 解析:“We” 是复数,be 动词用 “are”;“is” 用于第三人称单数;“am” 用于第一人称单数 “I”。所以选 A。A. happy B. sad C. angry答案:A 解析:有好朋友应该是开心的,“happy” 意为开心的;“sad” 是悲伤的;“angry” 是生气的。所以选 A。A. friend B. friendly C. friendship答案:C 解析:这里表示希望友谊长存,“friendship” 是名词,意为友谊;“friend” 是朋友;“friendly” 是友好的。所以选 C。第 7 页共 9 页2025 秋人教英语四年级上册 讲义三、阅读理解I'm Tom. I have two good friends. They are Lily and Lucy. Lily is tall and thin. She has long hair. She is very kind. She often helps others. She likes reading books. She often reads books in the library. Lucy is short and quiet. She has short hair. She is good at drawing. She often draws pictures after school. Lily and Lucy are twins. They both like music. They often listen to music together. They are my good friends. I like them very much.( )How many good friends does Tom have One. B. Two. C. Three.答案:B解析:文中明确提到 “I have two good friends.”,所以汤姆有两个好朋友,选 B。( )What does Lily look like She is tall and thin with long hair. B. She is short and quiet with short hair. C. She is tall and strong with short hair.答案:A 解析:根据 “Lily is tall and thin. She has long hair.” 可知,莉莉又高又瘦且有长发,选 A。( )What does Lucy like doing Reading books. B. Drawing pictures. C. Listening to music.答案:B 解析:从 “Lucy is short and quiet...She often draws pictures after school.” 可知,露西喜欢画画,选 B。( )Are Lily and Lucy twins Yes, they are. B. No, they aren't. C. We don't know.答案:A 解析:文中提到 “Lily and Lucy are twins.”,所以莉莉和露西是双胞胎,选 A。( )What do Lily and Lucy both like Reading books. B. Drawing pictures. C. Music.答案:C 解析:由 “They both like music.” 可知,莉莉和露西都喜欢音乐,选 C。四、作文请以“My Friend” 为题,写一篇短文介绍你的朋友。内容包括朋友的外貌、性格、爱好以及你们经常一起做的事情等。要求:语句通顺,书写规范,不少于 5 句话。参考范文My Friend第 8 页共 9 页2025 秋人教英语四年级上册 讲义I have a good friend. His name is Mike. He is tall and strong. He has short black hair. He is very friendly. He always smiles and is ready to help others.Mike likes playing basketball. He is good at it. We often play basketball together after school. We also like going to the library. We read interesting books there.We always have a great time together. I'm really glad to have such a good friend. I hope our friendship will last forever.解析:开头介绍朋友基本信息,如名字、外貌等。中间分别描述朋友的爱好以及和自己一起做的事情,条理清晰。结尾表达有这样朋友的感受和对友谊的期望,符合题目要求。2025 秋人教英语四年级上册 讲义知识讲解(一)人物外貌与性格类strong /str /:强壮的,形容人的身材健壮有力。如:My brother is strong. He can carry heavy things.(我哥哥很强壮,他能搬重物。)tall /t l/:高的,用于描述人的身高。My father is tall.(我爸爸很高。)short / t/:矮的;短的,形容人身材不高或物体长度较短。He is short.(他很矮。) Her hair is short.(她的头发很短。)thin /θ n/:瘦的,指人的身材苗条。The boy is thin.(这个男孩很瘦。)kind /ka nd/:友好的;和蔼的,描述人的性格友善。Our teacher is kind. She always helps us.(我们的老师很和蔼,她总是帮助我们。)quiet / kwa t/:文静的;安静的,形容人安静、不爱说话。The girl is quiet. She likes reading books.(这个女孩很文静,她喜欢看书。)(二)其他hair /he (r)/:头发,不可数名词。She has long hair.(她有长发。)best /best/:最好的,是 good 的最高级形式。常与 friend 搭配,best friend 表示 “最好的朋友”。Tom is my best friend.(汤姆是我最好的朋友。)Chinese / t a ni z/:作名词时,意为 “中文;中国人”;作形容词时,意为 “中国的” 。I like Chinese food.(我喜欢中国食物。)He is Chinese.(他是中国人。)read /ri d/:阅读,常见短语 read books(读书)。I often read books in the evening.(我晚上经常读书。)play /ple /:常见义项有 “玩耍;参加(体育运动等)”。We play games after school.(放学后我们玩游戏。)I play basketball on weekends.(我周末打篮球。)game /ɡe m/:游戏,常用短语 play games(玩游戏) 。Let's play a game.(我们玩个游戏吧。)football / f tb l/:足球运动,play football(踢足球),注意球类运动前不加定冠词 the 。They play football every Sunday.(他们每个周日都踢足球。)both /b θ/:两者都,用于两者之间,常位于 be 动词之后,实义动词之前。We both like music.(我们俩都喜欢音乐。)always / lwe z/:总是;一直,表示频率很高,常用于一般现在时,位于实义动词前,be 动词、助动词或情态动词后。He always gets up early.(他总是很早起床。)basketball / bɑ sk tb l/:篮球运动,play basketball(打篮球)。I play basketball with my friends.(我和朋友们一起打篮球。)(一)询问朋友姓名:What's your friend's name (你的朋友叫什么名字?)回答:His/Her name is...(他 / 她的名字是……) 。例如:What's your friend's name - His name is Zhang Peng.(你的朋友叫什么名字? - 他的名字是张鹏。)(二)描述朋友外貌:He's/She's + 形容词.(他 / 她是…… 样的);He/She has + 形容词 + 名词.(他 / 她有…… 的……)例如:He's tall and strong.(他又高又壮。)She has long hair.(她有长发。)(三)询问最好的朋友:Who's your best friend (谁是你最好的朋友?)回答:Sb. is my best friend.(某人是我最好的朋友。);Sb.(某人). She/He is...(她 /他是……) ,例如:Who's your best friend - Chen Jie. She's funny.(谁是你最好的朋 友? - 陈杰。她很有趣。)(四)描述与朋友一起做的事:Sb. often + 动词短语 + with me.(某人经常和我一起做某事)例如:He reads books with me.(他和我一起读书。)We play games together.(我们一起玩游戏。)(五)表达喜欢朋友及朋友也喜欢自己:I like my friend. My friend likes me.(我喜欢我的朋友。我的朋友也喜欢我。)(六)选择疑问句:A boy or girl (男孩还是女孩?)回答时直接选择其中一项,如:A boy.(一个男孩。)字母组合“sh” 发/ / 音:发音时,舌头靠近上颚,气流从舌头和上颚之间的缝隙挤出,摩擦成音。常见单词有:fish(鱼)/f /、ship(船)/ p/、shop(商店)/ p/、 English(英语)/ ɡl /、she(她)/ i /、share(分享)/ e (r)/ 。可以通过朗读含有“sh” 的单词和句子,如“I have no shell. Can we share ” 来加深对该发音的记忆。(一)形容词描述人物外貌和性格:学会运用 tall(高的)、short(矮的;短的)、strong(强壮的)、thin(瘦的)、kind(友好的)、quiet(文静的)等形容词描述朋友的外貌和性格特 点。注意形容词在句中的位置,一般放在 be 动词后作表语,或放在名词前作定语 。例如:The tall boy is my brother.(那个高个子男孩是我哥哥。)My friend is kind.(我的朋友很友好。)(二)动词第三人称单数形式:在一般现在时中,当主语是第三人称单数(he/she/it 或单个人名等)时,动词要变成第三人称单数形式。变化规则如下:一般动词在词尾加 -s,如:like - likes,play - plays,read - reads 。以 -s、 -x、 -sh、 -ch、 -o 结尾的动词,在词尾加 -es,如:watch - watches,wash - washes,go - goes 。以辅音字母 + y 结尾的动词,先变 y 为 i,再加 -es,如:study - studies 。特殊变化:have - has 。例如:He likes reading books.(他喜欢读书。)She often plays football.(她经常踢足球。)(三)both 的用法:both 表示 “两者都”,用于两者之间。常见用法有:both + 名词复数,如:Both boys like sports.(两个男孩都喜欢运动。)both of + 代词宾格 / 名词复数,如:Both of them are students.(他们两个都是学生。)置于 be 动词后,实义动词前,如:We are both happy.(我们俩都很开心。)We both like English.(我们俩都喜欢英语。)(四)选择疑问句:结构为 “一般疑问句 + or + 选择部分?”,回答时不能用 yes 或 no,要直接回答选择的内容。注意 or 连接的两个部分在语法和逻辑上要保持一致,如:Is he tall or short (他高还是矮?)2025 秋人教英语四年级上册 讲义配套练习一、选择题(20 道)My friend is . He can play basketball well.strong B. thin C. short—What's your friend's name — name is Sarah.She B. Her C. HersMy best friend long hair.have B. has C. isHe's tall strong.but B. and C. or—Who's your best friend —She is tall. B. Chen Jie. C. She likes reading.We often games together.play B. plays C. playingMy friend likes books.read B. reads C. readingyour friend a boy or a girl Is B. Are C. AmMy friend and I like music.both B. all C. tooShe always me with my English.help B. helps C. helpingI like sports. My friend likes sports, .too B. also C. eitherMy best friend is very . She often makes me laugh.kind B. funny C. quietis my friend. He's from China.His B. Him C. HeMy friend football after school.play B. plays C. playingWe like animal books.both B. all C. everyMy friend has eyes.big B. bigger C. biggestMy best friend often pictures with me.draw B. draws C. drawingI have a friend. name is John.He B. His C. HimMy friend is good at basketball.play B. plays C. playingShe's and kind.friend B. friendly C. friends(二)完型填空(20 道)I have a good 1 . Her name is Liu Ying. She is 2 . She has 3 hair. She is 4 and kind. We are in the 5 class. We often 6 together.We like 7 books. We both like 8 . She often 9 me with my Chinese.And I often help her 10 her English. We also like 11 games. On weekends, we often 12 football. She 13 football very well. She 14 likes singing. She often 15 songs after school. We 16 each other. We are 17 best friends. We always 18 happy together. I'm 19 to have such a good friend. I hope our 20 will last forever(永远).A. friend B. friends C. sisterA. tall B. short C. Both A and BA. long B. short C. Either A or BA. friendly B. friend C. friendsA. same B. different C. anotherA. plays B. play C. playingA. read B. reads C. readingA. animal B. animals C. an animalA. help B. helps C. helpingA. with B. for C. atA. play B. plays C. playingA. play B. plays C. playingA. play B. plays C. playingA. too B. also C. eitherA. sing B. sings C. singingA. like B. likes C. likingA. each other B. each others C. each other'sA. are B. is C. amA. happy B. sad C. angryA. friend B. friendly C. friendship(三)阅读理解I'm Tom. I have two good friends. They are Lily and Lucy. Lily is tall and thin. She has long hair. She is very kind. She often helps others. She likes reading books. She often reads books in the library. Lucy is short and quiet. She has short hair. She is good at drawing. She often draws pictures after school. Lily and Lucy are twins. They both like music. They often listen to music together. They are my good friends. I like them very much.( )How many good friends does Tom have One. B. Two. C. Three.( )What does Lily look like She is tall and thin with long hair. B. She is short and quiet with short hair. C. She is tall and strong with short hair.( )What does Lucy like doing Reading books. B. Drawing pictures. C. Listening to music.( )Are Lily and Lucy twins Yes, they are. B. No, they aren't. C. We don't know.( )What do Lily and Lucy both like Reading books. B. Drawing pictures. C. Music.四、作文请以“My Friend” 为题,写一篇短文介绍你的朋友。内容包括朋友的外貌、性格、爱好以及你们经常一起做的事情等。要求:语句通顺,书写规范,不少于 5 句话。 展开更多...... 收起↑ 资源列表 2025 秋人教英语四上讲义 Unit 02 学生版.docx 2025 秋人教英语四上讲义 Unit 02 教师版.docx