Unit 1 My name's Gina.

✅ 详解：用于初次见面询问对方姓名，回答有三种形式：直接说名字、使用"My name's + 姓名"或"I'm + 姓名"。拓展例句：— What's your English name? — My name's Alice. / I'm Alice.

✅ 详解：初次见面时的礼貌用语，表达很高兴认识对方，回答固定为"Nice to meet you, too."。也可以说"Nice to see you."（用于熟人见面）。拓展例句：— Nice to meet you, Mr. Li. — Nice to meet you, too.

✅ 详解：询问第三方男性的姓名，注意物主代词his的使用，回答用"His name's + 姓名"或"He's + 姓名"。易错点：不要混淆his（他的）和he's（他是）。拓展例句：— What's his father's name? — His name's Bob Smith.

✅ 详解：询问第三方女性的姓名，物主代词her表示"她的"，回答用"Her name's + 姓名"或"She's + 姓名"。拓展例句：— What's her sister's name? — Her name's Linda.

✅ 详解：be动词引导的一般疑问句，用于确认男性身份，肯定回答"Yes, he is."，否定回答"No, he isn't."，注意is not缩写为isn't。拓展例句：— Is he your new classmate? — No, he isn't. He's my cousin.

✅ 详解：确认女性身份的一般疑问句，回答与男性类似，注意she is缩写为she's，否定形式she isn't。拓展例句：— Is she your English teacher? — Yes, she is. She's very nice.

✅ 详解：询问电话号码，telephone number和phone number意思相同，回答用"It's + 号码"，注意数字直接读出，0可以读作zero或oh。拓展例句：— What's your QQ number? — It's 123456789.

✅ 详解：主系表结构，描述某人的位置，in + 大地点（国家/城市），at + 小地点（学校/家）。拓展例句：My pen pal is in Canada. / My mother is at home.

✅ 详解：last name = family name 表示"姓氏"，first name = given name 表示"名字"，中英姓名顺序相反：中文是"姓+名"，英文是"名+姓"。拓展例句：His last name is Brown. / My first name is Tom.

✅ 详解：描述姓名的常用表达，注意形容词性物主代词his/her/my/your后面必须接名词。拓展例句：Her first name is Mary. / Your last name is Wang.

Unit 2 This is my sister.

✅ 详解：介绍近处的单个人物，this指距离说话人近的人或物。拓展例句：This is my English teacher, Miss Gao.

✅ 详解：介绍远处的单个人物，that指距离说话人远的人或物。电话用语中this指代自己，that指代对方，如：Hello, this is Tom speaking. Who's that?

✅ 详解：介绍近处的多个人物，these是this的复数形式，后面接可数名词复数。拓展例句：These are my new books.

✅ 详解：介绍远处的多个人物，those是that的复数形式，后面接可数名词复数。拓展例句：Those are my grandparents' photos.

✅ 详解：who引导的特殊疑问句，询问单个女性的身份，回答用"She's + 身份/姓名"。拓展例句：— Who's the woman in red? — She's my aunt.

✅ 详解：询问多个人物的身份，who're是who are的缩写，回答用"They're + 身份/姓名"。拓展例句：— Who're the boys over there? — They're my classmates.

✅ 详解：确认复数人物身份的一般疑问句，肯定回答"Yes, they are."，否定回答"No, they aren't."，注意they指代复数名词。拓展例句：— Are those your friends? — Yes, they are.

✅ 详解：here位于句首的倒装句，"Here be + 名词"表示"这是……/这里有……"，be动词的单复数由后面的名词决定。拓展例句：Here is your pen. / Here are your apples.

✅ 详解：介词短语位于句首的倒装句，正常语序是"My brothers, Bob and Eric, are in the next picture."，用于强调地点。拓展例句：Under the tree is my cat.

✅ 详解：too表示"也"，用于肯定句句末，前面可以加逗号。拓展例句：I like apples, too. / He is a student, too.

✅ 详解：a photo of ... 表示"一张……的照片"，of是名词所有格的一种，表示无生命事物的所属关系。拓展例句：This is a photo of my school.

✅ 详解：and连接两个并列主语时，谓语动词用复数形式are。拓展例句：My father and my mother are teachers.

✅ 详解：两个并列的人作主语时，谓语动词用复数，介绍多个人物时可以用"A and B are ..."结构。拓展例句：Lucy and Lily are twin sisters.

✅ 详解：确认男性身份的一般疑问句，uncle是对长辈男性的称呼，可以指叔叔、伯伯、舅舅等。拓展例句：— Is he your father's brother? — Yes, he is my uncle.

✅ 详解：

Unit 3 Is this your pencil?

✅ 详解：确认单数物品归属的一般疑问句，mine是名词性物主代词，相当于"my + 名词"，这里mine = my pencil。名词性物主代词可以单独使用，后面不需要接名词。拓展例句：— Is this your ruler? — No, it isn't. It's his (his = his ruler).

✅ 详解：询问远处单数物品的归属，his既可以作形容词性物主代词（后面接名词），也可以作名词性物主代词（单独使用）。拓展例句：— Is that his schoolbag? — Yes, it's his (his = his schoolbag).

✅ 详解：确认近处复数物品归属的一般疑问句，回答用they指代复数名词，hers是名词性物主代词，相当于"her + 名词"。拓展例句：— Are these your pens? — Yes, they are mine.

✅ 详解：询问远处复数物品的归属，注意名词性物主代词的单复数一致，即使指代复数名词，mine/yours/his/hers形式也不变。拓展例句：— Are those her erasers? — No, they aren't. They're ours.

✅ 详解：What about ...? = How about ...? 表示"……怎么样？"，用于询问对方的看法或提出建议，后面接名词、代词或动名词。拓展例句：What about going to the park? / How about this red pen?

✅ 详解：Thank you for ... 表示"因……而感谢你"，for是介词，后面接名词或动名词。拓展例句：Thank you for your book. / Thank you for helping me.

✅ 详解：回应别人感谢的常用表达，还可以说"That's OK." / "Not at all." / "It's my pleasure."。拓展例句：— Thank you for your help. — You're welcome.

✅ 详解：how引导的特殊疑问句，询问如何拼写单词，回答时字母全部大写，中间用连字符连接。也可以说"Spell it, please."。拓展例句：— How do you spell "apple"? — A-P-P-L-E, apple.

✅ 详解：must是情态动词，表示"必须"，后面接动词原形，没有人称和数的变化。否定形式是mustn't，表示"禁止"。拓展例句：You must finish your homework first. / You mustn't smoke here.

✅ 详解：call sb. at + 号码 表示"拨打……号码找某人"，at后面接电话号码。拓展例句：Please call me at 13812345678.

✅ 详解：e-mail sb. at + 邮箱 表示"给某人发邮件到……地址"，e-mail在这里作动词用，也可以作名词。拓展例句：E-mail me at tom@163.com.

✅ 详解：a set of 表示"一套/一串"，后面接复数名词，但整个短语作主语时，谓语动词用单数形式is。拓展例句：A set of keys is on the desk.

✅ 详解：yours是名词性物主代词，相当于"your + 名词"，这里yours可以指代单数或复数名词，根据上下文判断。拓展例句：This pen is mine. Is that yours?

✅ 详解：ask sb. for sth. 表示"向某人要某物"，for后面接索要的物品。拓展例句：You can ask your teacher for help.

✅ 详解：lost是lose的过去式，表示"丢失"，过去式表示过去发生的动作。拓展例句：I lost my pen yesterday. / She lost her keys last week.

Unit 4 Where's my schoolbag?

✅ 详解：where引导的特殊疑问句，询问单数物品的位置，回答用"It's + 方位介词 + 地点"。常用方位介词：in（在……里面）、on（在……上面）、under（在……下面）、next to（在……旁边）。拓展例句：— Where's my schoolbag? — It's on the desk.

✅ 详解：询问复数物品的位置，where are是where is的复数形式，回答用"They're + 方位介词 + 地点"。拓展例句：— Where are my keys? — They're in the drawer.

✅ 详解：确认单数物品位置的一般疑问句，回答时用it指代单数名词。拓展例句：— Is your book on the sofa? — No, it isn't. It's in my schoolbag.

✅ 详解：确认复数物品位置的一般疑问句，回答用they指代复数名词。拓展例句：— Are your pens in the pencil box? — Yes, they are.

✅ 详解：I think + 从句 表示"我认为……"，是表达个人看法的常用句型，否定形式通常是"I don't think + 从句"（否定前移）。拓展例句：I think she is at home. / I don't think he is right.

✅ 详解：but是转折连词，连接两个意思相反的句子，表示"但是"。拓展例句：I like English, but I don't like math. / He is short, but he is strong.

✅ 详解：everywhere是不定副词，表示"到处，处处"，相当于here and there。拓展例句：My toys are everywhere in the room.

✅ 详解：hers是名词性物主代词，相当于"her + 名词"，这里hers = her model plane。拓展例句：The red pen is his. The blue one is hers.

✅ 详解：always是频率副词，表示"总是，一直"，通常放在实义动词之前，be动词之后。常见频率副词：always > usually > often > sometimes > seldom > never。拓展例句：He always gets up early. / She is always late for school.

✅ 详解：描述物品位置的主系表结构，介词短语作表语。拓展例句：My books are in the schoolbag. / Her ruler is under the chair.

✅ 详解：under是方位介词，表示"在……下面"，对应反义词是on（在……上面）。拓展例句：The cat is under the table. / The ball is under the bed.

✅ 详解：Come on! 是口语常用表达，根据语境有不同含义：可以表示催促"快点"，也可以表示鼓励"加油"，还可以表示不耐烦"得了吧"。拓展例句：Come on! We'll be late for school. / Come on! You can do it!

✅ 详解：询问单数物品位置的特殊疑问句，注意形容词性物主代词your后面接名词。拓展例句：— Where's your English book? — It's on the desk.

✅ 详解：their是形容词性物主代词，表示"他们的"，后面接名词。拓展例句：Their classroom is on the second floor. / Their names are Lucy and Lily.

✅ 详解：and连接两个并列的单数名词作主语时，谓语动词用复数形式are。拓展例句：My pen and my pencil are in the pencil box.

Unit 5 Do you have a soccer ball?

✅ 详解：have表示"拥有"，用于第一人称(I/we)、第二人称(you)和第三人称复数(they)，一般疑问句用助动词do开头，肯定回答"Yes, 主语 + do."，否定回答"No, 主语 + don't."。拓展例句：— Do you have a basketball? — Yes, I do. / No, I don't.

✅ 详解：has是have的第三人称单数形式，用于主语是he/she/it或单数名词时，一般疑问句用助动词does开头，后面的动词has变回原形have。肯定回答"Yes, 主语 + does."，否定回答"No, 主语 + doesn't."。拓展例句：— Does she have a tennis racket? — Yes, she does.

✅ 详解：第三人称单数主语的一般疑问句，注意助动词does后面的动词要用原形have。拓展例句：— Does your brother have a soccer ball? — No, he doesn't. He has a basketball.

✅ 详解：复数主语的一般疑问句，助动词用do，后面接动词原形have。拓展例句：— Do your parents have a car? — Yes, they do.

✅ 详解：Let's = Let us 表示"让我们……吧"，后面接动词原形，用于提出建议。be late for 表示"……迟到"。拓展例句：Let's go home. / Don't be late for class.

✅ 详解：Let me 表示"让我……"，后面接动词原形。拓展例句：Let me help you. / Let me have a look.

✅ 详解：sound是系动词，表示"听起来"，后面接形容词作表语，主语是单数时sound加s。拓展例句：That sounds interesting. / The song sounds beautiful.

✅ 详解：play + 球类运动 表示"打/踢……球"，中间不加定冠词the；play + 乐器 表示"演奏……乐器"，中间要加the。拓展例句：play football 踢足球 / play the piano 弹钢琴

✅ 详解：on TV 表示"在电视上"，通过电视看节目用watch ... on TV。拓展例句：I watch football matches on TV.

✅ 详解：It's + 形容词 + for sb. 表示"对某人来说某事是……的"，for后面接表示人的名词或代词。拓展例句：It's difficult for me. / It's interesting for kids.

✅ 详解：after class 表示"下课后"，after表示"在……之后"。类似短语：after school 放学后 / after work 下班后。拓展例句：After class, we often play games.

✅ 详解：but连接转折句，后面的does是助动词，代替前面的have a soccer ball，避免重复。拓展例句：I don't have a pen, but my sister does.

✅ 详解：the same 表示"相同的"，后面接单数名词，same前面必须加定冠词the。拓展例句：We are in the same class. / They have the same hobby.

✅ 详解：动名词(doing)作主语时，谓语动词用单数形式is。拓展例句：Reading is good for us. / Swimming is my favorite sport.

✅ 详解：Let's 引导的建议句型，回答常用"That sounds good/great/interesting."或"Good idea!"。拓展例句：— Let's go to the park. — That sounds great!

Unit 6 Do you like bananas?

✅ 详解：like表示"喜欢"，用于第一、第二人称和复数主语的一般疑问句，助动词用do。like后面可以接名词、代词或动名词(doing)。拓展例句：— Do you like playing basketball? — Yes, I do. / No, I don't.

✅ 详解：第三人称单数主语的一般疑问句，助动词用does，后面的动词like用原形。注意以o结尾的名词变复数通常加es，如tomato → tomatoes, potato → potatoes。拓展例句：— Does he like strawberries? — Yes, he does.

✅ 详解：询问女性第三人称的喜好，ice-cream是不可数名词，没有复数形式。拓展例句：— Does she like drinking milk? — No, she doesn't. She likes juice.

✅ 详解：but连接转折句，表达相反的喜好。like后面接可数名词复数表示一类事物。拓展例句：I like dogs, but I don't like cats.

✅ 详解：主语是第三人称单数he时，谓语动词like要加s，变成likes。拓展例句：She likes singing. / My father likes reading newspapers.

✅ 详解：like ... for + 三餐 表示"某餐喜欢吃什么"。拓展例句：I like noodles for breakfast. / We like rice for dinner.

✅ 详解：what引导的特殊疑问句，询问对方喜欢什么种类的水果。fruit表示总称时是不可数名词，表示种类时是可数名词。拓展例句：— What sports do you like? — I like swimming and running.

✅ 详解：What about ...? 用于询问对方的意见或建议，这里接名词lunch。healthy是形容词，表示"健康的"。拓展例句：— What about going shopping? — Good idea!

✅ 详解：want to do sth. 表示"想要做某事"，to后面接动词原形。be动词后面接形容词fat作表语。拓展例句：I want to be a teacher. / She wants to go home.

✅ 详解：healthy food 表示"健康的食物"，healthy是形容词，修饰名词food。拓展例句：We should eat more healthy food.

✅ 详解：for dinner 表示"作为晚餐"，三餐前用介词for。拓展例句：What do you have for lunch?

✅ 详解：否定句结构：主语 + don't/doesn't + 动词原形 + 其他。主语是I时，助动词用don't。拓展例句：I don't like coffee. / He doesn't like tea.

✅ 详解：Let's think about ... 表示"让我们考虑一下……"，about是介词，后面接名词或动名词。拓展例句：Let's think about the problem.

✅ 详解：but连接转折句，主语my parents是复数，所以助动词用don't。拓展例句：My friends like playing football, but I don't.

✅ 详解：回答时说明不喜欢的原因，用because引导原因状语从句。拓展例句：— Do you like math? — No, I don't. Because it's too difficult.

Unit 7 How much are these socks?

✅ 详解：how much可以用来询问价格，意思是"多少钱"，询问单数物品价格时be动词用is，回答用"It's + 价格"。dollar是美元，是可数名词，复数形式dollars。拓展例句：— How much is this pen? — It's two yuan.

✅ 详解：询问复数物品价格时be动词用are，回答用"They're + 价格"。a pair of 表示"一双/一对"，后面接复数名词，作主语时谓语动词用单数。拓展例句：— How much are these shoes? — They're 100 yuan.

✅ 详解：购物场景常用句型，店员主动询问顾客需求，还可以说"What can I do for you?"。回答需要帮助时说"Yes, please."，不需要时说"No, thanks."。拓展例句：— Can I help you? — Yes, please. I want a T-shirt.

✅ 详解：询问顾客想要什么颜色，what color表示"什么颜色"。拓展例句：— What color do you like best? — I like blue best.

✅ 详解：How about ...? 用于征求对方意见，"这个怎么样？"，look是系动词，后面接形容词nice作表语。拓展例句：— How about this blue skirt? — It looks beautiful.

✅ 详解：I'll take it. 表示"我买了"，是购物时决定买某物的常用表达，take在这里表示"买"。拓展例句：This sweater is very nice. I'll take it.

✅ 详解：表示价格的常用结构：价格 + for + 物品，意思是"……钱买……"。拓展例句：We have pens for 5 yuan each.

✅ 详解：表达购买意愿，take表示"买"，后面接要买的物品。拓展例句：I'll take three apples.

✅ 详解：购物时店员把东西递给顾客的常用表达，意思是"给你"。拓展例句：— Here you are. — Thank you.

✅ 详解：促销广告常用句型，come and do sth. 表示"来做某事"，at our great sale 表示"我们大促销"。拓展例句：Come and see our new clothes.

✅ 详解：at very good prices 表示"以非常优惠的价格"，price是可数名词，这里用复数形式。拓展例句：We sell all the books at good prices.

✅ 详解：表示有某物出售的常用结构：have + 物品 + for + 价格。拓展例句：We have bags for only 20 yuan.

✅ 详解：商品介绍的常用表达，only表示"仅仅，只"，强调价格便宜。拓展例句：These pens are only 1 yuan each.

✅ 详解：for sb. 表示"对某人来说"，用于说明物品适用的对象。拓展例句：For girls, we have beautiful skirts in all colors.

✅ 详解：促销价格介绍，three pairs表示"三双"，pair是可数名词，复数形式pairs。拓展例句：The pencils are 5 yuan for two.

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