七年级上册英语各单元复习要点30504.pdf

七年级上册英语各单元复习要点 Starter Unit 1 Good morning! 重点单词： Good,morning,hi,hello,afternoon,evening,how,are,you,I,am,fine,thanks,Ok,thank 重点句型和语法： 一、见面问候语 1. -Good morning! -Good morning! -Good afternoon! -Good afternoon! -Good evening! -Good evening! -Good night! -Good night! 2. -How are you ? 好友重逢 -I’m fine, thanks. / Fine, thank you. /I’m OK, thank you very much. And you? -I’m fine, too. Thanks. 3. -How do you do? 初次见面 - How do you do? 4. -Hello/Hi! -Hello/Hi! Hello 较正式但一般不对长辈说 二、Be 动词的用法 Be 动词的一般现在时有三种： I 与第一人称(I)连用；is 与第三人称（他 he,她 she,它 it）和其他单数名词连用；are 与人称复数（第一人称 we,第二人称 you,第三人称 they）和复数名词连用。

即：我(I)用 am, 你(you)用 are, is 跟着他(he)她(she)它(it)； 单数名词用 is 复数名词全用 are 三、大写字母的用法： 1.句子开头要大写（首字母）How are you? 2.文章标题要大写（虚词除外）；Good morning! 3.节日、月份、星期几（专有名词）；New Year’s Day, May, Monday 4.报纸、杂志和书籍；China Daily, Jane 5.职业、头衔和称谓；Doctor Wang, President Wen, Uncle Wang 6.I 和 OK 要大写； 7.缩略词语要大写MBA, CCTV Starter Unit 2 What’s this in English? 重点单词和短语 What,is,this,in,English,map,cup,ruler,pen,orange,jacket,key,quilt,it,a,that,spell,please,in English,an orange,a key,a ruler,a map,a quilt. 重点句型和语法 一、what 引导的特殊疑问句 -What’s this in English？ -It’s a map/ruler/pen/jacket/key/quilt/an orange. -How do you spell it? /Spell it, please. Can you spell it? -M-A-P/…… What colour is it?/ What’s your name?…… 二、不定冠词 a/an 的用法： 1.表示数量“一”（微弱的）；a book 2.不具体说的某人或某物；a Mr Wang 3.泛指某一类人或物；a cat 4.某一类人或物中的任何一个；There is an elephant in the zoo. 5.首次提到的人或物；This is a ky. 6.用于抽象名词前，使抽象名词具体化；It’s a pleasure to talk with you. 7.某些固定搭配中：have a look, take a walk, have a good time. a 用于以辅音因素开头的单数可数名词之前， an 用于以元音因素开头的单数可数名词之前。

三、this,that指示代词的用法 This: “这个，这”指近处或距离说话人较近的人或物 That: “哪个，那”指远处或距离说话人较远的人或物 Starter Unit 3 What colour is it?  重点单词 Colour, red, yellow, green, blue, black, white, purple, brown, the, now, see, can, say, my, what colour 重点句型和语法 一、重点句型: 1.-Good morning! -Good morning! -What’s this in English？/What’s this? /What’s that? -It’s a map/ruler/pen/jacket/key/quilt/an orange. -How do you spell it? /Spell it, please. Can you spell it? -M-A-P/…… -What colour is it? -It’s red/blue/yellow…… 2.-What colour are the rooms? -They are…… 3.The ruler is blue. 二、定冠词 the 的用法： The 表示特指的人、物或群体， 作用相当于 this, that, these, those.特指说话双方都知道的人、物或上文已提到的人、物。

1.表示某个（些）特定的人或事物；Give me the book. 2.特指说话双方都知道的人或事物；Where is the book? 3.指上文提到过的人或事物；This is a pen, the pen is black. 4.用在世界上独一无二的事物前；the sun, the earth, the moon, the world 5.和某些形容词连用，表示一类人；the old, the young, the wound 6.在方位名词前；in the east/west/north/south 7.西洋乐器前；play the piano/violin/guitar…… 8.由普通名词组成的专有名词前；the Great Wall, the Summer Palace 9.某些固定搭配：in the morning/afternoon/evening Unit 1 My name’s Gina 重点单词或短语 Name,nice,to,meet,too,your,Mrs.,his,and,her,yes,she,he,no,not,zero,one,two,three,four,five,six,seven,eight,nine,telephone,number,phone,friend,China,last,middle,school,first,telephone/phone number,last name,family name,given name, first name,middle school,in China 重点句型或语法 一、重点句型 1.-Hi, my name is Gina. -I’m Jenny. -Nice to meet you. -Nice to meet you, too. 2.-Hello! What’s your name? -My name is……/I’m…… 3.-What’s his/her/name? (last name, family name, first name, given name) -His/Her (last name, family name, first name, given name)name is…… /He/She is …… 4.-Are you Gina? -Yes, I am./ No, I’m not. 5.-Is he/she …… -Yes, he/she is. / No, he/she isn’t. 6.-What’s your/her/his telephone number? /What number is your/her/his telephone? -It’s 585-0886/…… 二、it 的用法 it 是代词，“它”，是第三人称的单数形式。

1.指代前面已提到的事物；What’s this? It’s a dog. 2.指代陌生或不熟悉的人；Who is behind the door? It may be Jim. 3.表示时间、距离、天气等；What time is it? It’s funny. 三、数词的用法 基数词: 表示“多少”的数词 One,two,three,four,five,six,seven,eight,nine 序数词: 表示“第几”的数词first 1.表示数字、年龄、日期； How old are you? I’m ten. What’s the date today? It’s October 3. What’s four and one? 2.表示编号；class one, unit one,lesson one 3.表示号码，如号码、门牌号、身份证； 4.表示时刻；8:00 四、形容词性物主代词 物主代词是表示所有关系的代词， 是人称代词的属格形式 分为形容词性物主代词和名词性物主代词有人称和数的变化本单元主讲形容词性物主代词 Unit 2 This is my sister 重点单词 Sister,mother,father,parent,brother,grandfather,grandmother,grandparent,family,those,who,these,hey,well,have,day,bye,son,cousin,grandpa,mom,aunt,grandma,uncle,dad,here,daughter,photo,of,next,picture,girl,dog 重点句型 1.-This/That is my sister/brother/father/mother/son/…… 单数 -These/those are my sisters/brothers/…… 复数 2.-Who is he/she ? 单数 -He/She is my mom/my dad/my brother/my sister/my grandma/grandpa…… 3.-Who are these/those? 复数 -They are my my sisters/brothers/…… 4.-Is he/she your sister? 单数 -Yes,he/she is. /No, he/she isn’t. 5.-Are these/those your sisters? 复数 -Yes, they are. / No, they aren’t. 6.Tom: Jhon, this is my sister, Mike. Mike, this is my friend. Jhon: Nice to meet you! Mike: Nice to meet you, too. 语法 一、指示代词：this, that, these, those 单数：this: “这个，这”指近处或距离说话人较近的人或物。

that: “那个，那”指远处或距离说话人较远的人或物 复数：these: “这些”指近处或距离说话人较近的人或物 those: “那些”指远处或距离说话人较远的人或物 二、将单数形式的句子变为复数形式的句子 1.指示代词的变化：this→these, that→those 2.人称代词的变化：I→we; you 不变；he/she/it→they 3.be 动词的变化：am/is→are 4.可数名词的变化： 单数变复数的规则变化 (1)一般情况下在词尾加-s； (2)以 s, x, sh, ch 结尾的加-es； (3)以 o 结尾的加-s 或-es; -s: photos/radios/pianos/zoos/bamboos/kilos -es: tomatoes/potatoes/…… (4)以 f 或 fe 结尾的变 f/fe→v+es, （屋顶 roofs,信念 beliefs,首领 chiefs 除外 knife→knives shelf→shelves (5)以“辅音字母+y”结尾的变 y→i+es 不规则变化： (1)单复数同形：sheep 绵羊，deer 鹿，means 手段 (2)变元音：man→men, foot→feet, tooth→teeth (3)变词尾：child→children, ox→oxen, mouse→mice (4)只有复数的名词：congratulations, clothes, glasses, surroundings, goods, shorts, thanks, trousers, wishes (5)单复数意思不一致：glass 玻璃，glasses 眼镜；water 水，waters 水域；people人民，peoples 民族；force 力量，forces 部队；arm 胳膊，arms 武器；…… 三、人称代词的用法：he,she,it,I,they,we,you 1 与 be 动词的搭配：I→am, he/she/it→is, you/we/they→are 2 独立作主语时习惯用宾格：me，you，him，her，it，us，you，them -I like bananas.-Me too. 3 并列作主语的顺序： 单数：你 you,她 she/他 he,我 I 二三一 复数：我们 we,你们 you,他们 they 一二三 Unit 3 Is this your pencil? 重点单词 Pencil,book,eraser,box,schoolbag,dictionary,his,mine,hers, excuse,me,thank,teacher,about,yours,for,help,welcome,baseball,watch,computer,game,card,notebook,ring,bag,in,library,ask,find,some,classroom,e-mail,at,call,lost,must,set 重点句型 1.-Is this/that your book? -Yes, it is. It’s mine. -Thank you for your help. -You’re welcome. -No, it isn’t. It’s his/hers. 2.-Is this/that his/her book? -Yes, it is. It’s his/hers -No, it isn’t. It’s mine. 3.-Are these/those your books? -Yes, they are. They are mine. -No, they aren’t. They are his/hers. 4.-Are these/those your pencils? -No, they are Bob’s/Mary’s. 5.-What about this dictionary? What about=how about “如何，好吗，怎么样”，用于征求对方意见。

What about/how about a cup of tea? 喝杯茶怎么样？ 6.call sb at+号码；sb must do sth; thank sb for sth 语法 1.将含有 be 动词的陈述句转换为一般疑问句 将 be 动词（am,is are）提到句首并大写首字母，句末用问号，第一、二人称互换，some，any 互换 2.含有 be 动词的一般疑问句的肯定回答和否定回答 肯定回答：Yes, 主语+be(am,is,are) 否定回答：No, 主语+be(am,is,are)not. 缩写：I’m not/he isn’t/they aren’t 3.名词性物主代词：Page 5 Unit 4 Where is my schoolbag? 重点单词 Where,table,bed,bookcase,sofa,chair,onunder,come,desk, think,room,their,hat,yeah,know,radio,clock,tape,player,model,plane,tidy,but,our,everywhere,always,tape player,model plane,be tidy,in our rooms,have a clock,on her bed,on the sofa,under your bed,in your schoolbag,come on,on your head 重点句型 1.-Where is my schoolbag? -It’s on the desk/under the bed/in the room. 2.-Where are my schoolbags? -They are on the desk/under the bed/in the room. 3.-Is the ……in/on/under the……？ -Yes, it is. /No, it isn’t. 4.-Are the ……in/on/under the……？ -Yes, they are. /No, they aren’t. 语法 一、方位介词：on, in, under 通常回答 where 引导的特殊疑问句。

1.on“在……上面”，强调一物再另一物的表面上On the wall, on the desk, on the floor, on the bed…… 2.in“在……里” (1)表方位：“在……里、中(上)” In the tree “在树上” 表树上外来的事物 On the tree“在树上”表树上长出来的东西 (2)表示图片或报纸上的内容：in the picture, in the newspaper (3)表时间：早中晚，年、月、年代、世纪 In the morning/afternoon/evening, in 2008, in 21 century, in 1990’s (4)表地点：城市、乡村、国家 In Beijing, in Shanghai (5)用某种语言：in English (6)用原材料：in red (7)表示穿着、戴着：the girl in blue is a student. 3.under“在……下”在某物的正下方 二、人称代词作主语时，将含有实义动词的陈述句变为一般疑问句及其肯定回答和否定回答，否定句 1.当主语是人称代词的复数时，变疑问句在句首加 Do,句末用问号，第一、二人称互换，some，any 互换。

变否定句在实义动词前加 don’t, some, any 互换 疑问句的肯定回答：Yes, 主语+do. 疑问句的否定回答：No, 主语+don’t. 2.当主语是人称代词的单数时，变疑问句在句首加 Does,句末用问号，第一、二人称互换，some，any 互换变否定句在实义动词前加 doesn’t, some, any 互换 疑问句的肯定回答：Yes,主语+does. 疑问句的否定回答：No,主语+doesn’t. Unit 5 Do you have a soccer ball? 重点单词 Do,have,tennis,ball,bat,soccer,volleyball,basketball,hey,let,us,go,we,late,get,great,play,sound,interesting,boring,fun,difficult,relaxing,watch,same,love,with,sport,them,only,like,easy,after,class,classmate,soccer ball,ping-pong bat,play volleyball,play sports 重点句型 1.-Do you/they have a soccer? -Yes, I/they do. /No, I/they do. 2.-Does he/she have a soccer? -Yes, he/she does. /No, he/she doesn’t. 3. I/they don’t have a soccer. 4. He/She doesn’t have a soccer. He/She has a soccer. 语法 一、人称代词的宾格 二、一般现在时态中 have 的用法 1.have 的主语是名词复数、第一二人称单复数和第三人称复数；has 是第三人称的单数形式，主语是不可数名词、可数名词的单数、第三人称的单数。

2.have/has 作谓语时的句型转换 (1)否定句式：主语+don’t/doesn’t +have (2)一般疑问句式：Do/Does +主语+have……？ 肯定回答：Yes, 主语+do/does 否定回答：No, 主语+don’t/doesn’t. (3)have 之后的名词有 some 修饰时，变疑问句和否定句时改为 any. (4)have/has 当“有”讲时与 there be 的区别 Have/has: 与主语是所属关系，强调某人“拥有、占有”某物； There be: “客观存在”，强调客观存在的事实，是 there 引起的倒装句 (5)have 的其他含义：“吃、喝”或其他 Have breakfast, have a look, have a part Unit 6 Do you like bananas?  重点单词 Bananas,hamburger,tomato,icecream,salad,strawberry,pear,milk,bread,birthday,dinner,week,food,sure,burger,vegetable,fruit,right,apple,then,egg,carrot,rice,chicken,so,breakfast,lunch,star,eat,well,habit,health,really,question,want,be fat, think about,how about,sports star,volleyball star,eating habits,for breakfast,for dinner,after dinner. 重点句型 1.-Do you/they like bananas? -Yes, I/they do. /No, I/they do. 2.-Does he/she like bananas? -Yes, he/she does. /No, he/she doesn’t. 3.-He/She likes…… He/She doesn’t like…… 4.-What do you/they like for……？ -I like……for…… 5.He/She likes……,but he/she doesn’t like…… 语法 一、like 的用法 1.like sb/sth“喜欢某人、某物” I like bananas. 2.like to do sth“喜欢做某事” 3.like doing sth“喜欢做某事” 二、well 与 good 1.well adj 位于联系动词之后，表达“健康的”。

I’m very well. adv 修饰动词We play football well. 2.good：adj, 作名词的前置定语，连系动词的表语She is a good girl. 三、it 的用法 I think it’s healthy. 1.人称代词，指代上文中已提到或刚刚提到的单数事物，以避免重复 2.用于指代时间、天气、日期、距离、价值、温度等 3.用作形式主语，代替动词不定式位于句首，而真正的主语是动词不定式，避免句子头重脚轻It’s easy for me to play basketball. 四、与三餐有关的短语 At breakfast/lunch/dinner/supper 在吃早、午、晚餐 Have breakfast/lunch/dinner/supper 吃早、午、晚餐 Have sth for breakfast/lunch/dinner/supper 早、午、晚餐吃某物 五、可数名词与不可数名词 1.可数名词：可以计数的名词 (1)分类 单数可数名词：单个人或事物 复数可数名词：两个或多个人或事物 (2)名词复数的规则变化 ①一般在词尾加-s。

Books, pens ②以 s,x,sh,ch 结尾的在词尾加-esClasses, watches ③以“辅音字母+y”结尾的，变 y→i+esfamilies. ④以 f,fe 结尾的变 f,fe→v+esKnives, wives 屋顶 roofs,信念 beliefs,首领 chiefs 除外 ⑤以 o 结尾的加-s 或-es; -s: photos/radios/pianos/zoos/bamboos/kilos -es: tomatoes/potatoes/…… (3)不规则变化： ①单复数同形：sheep 绵羊，deer 鹿，means 手段 ②变元音：man→men, foot→feet, tooth→teeth ③变词尾：child→children, ox→oxen, mouse→mice ④只有复数的名词：congratulations, clothes, glasses, surroundings, goods, shorts, thanks, trousers, wishes ⑤单复数意思不一致：glass 玻璃，glasses 眼镜；water 水，waters 水域；people人民，peoples 民族；force 力量，forces 部队；arm 胳膊，arms 武器；…… 即有些词既可以作可数名词也可以做不可数名词，但意思不一致。

2.不可数名词 不能直接用数词来表示数量，如物质名词、抽象名词没有复数形式如果要表示数量必须借助其他词如，“计量单位+of” 用法： (1)没有复数形式 (2)作主语时谓语动词用单数 (3)其前不用不定冠词 a/an (4)其前不用基数词 (5)表数量用“计量单位词+of” (6)可用 some, any, much 来修饰 Would you like some bread? Unit 7 How much are these socks? 重点单词 Much,sock,Tshirt,sweater,trousers,shoe,skirt,dollar,big,small,short,long,woman,need,look,pair,take,ten,Mr.,clothes,store,buy,sale,sell,all.Very,price,boy,buy sb sth=buy sth for sb 重点句型 1.-How much is this T-shirt? -It’s……dollars/yuan -I will take it -Here you are. -Thank you. -You’re welcome. 2.How much are……？ -They’re……dollars/yuan -I will take them -Here you are. -Thank you. -You’re welcome. 3.-Can I help you? -Yes, please. I need…… -What colour do you want? -Blue. 4.-Come and buy your clothes at…….We sell……at very good price. We have……for……. Come to……now. 语法 一、how much 与 how many 的区别 1.how much (1)提问物品的价格：“多少钱”=what’s the price of…… (2)提问不可数名词的数量。

How much milk do you drink everyday? 2.how many 提问可数名词的数量:“多少”How many apples do you have everyday? 二、Can I help you?的用法 是服务员招呼顾客的常用语May I help you?=What can I do for you?=Is there anything I can do for you? 肯定回答：Thank you, I want……/Yes, please. I’d like…… 否定回答：No, thanks. I’m just looking around./ Just have a look. can’t help doing sth 情不自禁做…… 三、one 与 it 的区别 两者均可作代词， 代替上文出现过的名词 1.one: 指代“同名异物”，即指代与前面事物同属一类的事物同类事物中的“一个”用 one, “一些”用 ones 2.it 指代“同名同物”，即上文出现过的同一事物 四、here you are 句型在不同情景的含义 1.“给你”：向别人借东西或购物时 2.“终于找到了”：寻物时，自己发现时。

3.“你到站了”：乘车到站时，司机或售票员会说 五、基数词 基数词，表示数目或数量的多少 1.基数词的表达 (1)one 到 twelve 逐一记忆 One, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve (2)thirteen 到 nineteen，在个尾数后加后缀-teen, thirteen, fifteen, eighteen 除外 (3)Twenty 到 ninety 表示“几十”，在个尾数后加后缀-tyTwenty, thirty, forty, fifty,eighty 除外 (4)21~29 至 91~99，表示“几十几”，在“整十-个位数”Twenty-one (5)One hundred/a hundred“一百”，200~900 用“具体数字+hundred” 2.基数词的用法 (1)表示年龄，基数词+years old (2)表述数量，位于名词之前Three books (3)表示顺序、编号Class one (4)用来计算Two and three is five. Unit 8 When is your birthday? 重点单词 When,month,January,February,March,April,May,June,July,August,September,October,November,December,happy,old,part,first,second,third,fifth,eighth,ninth,twelfth,twentieth,test,trip,art,festival,dear,student,thing,term,busy,time,there,happy birthday,how old,English test,school trip,Sports Day,art festival,Children’s Day,Women’s Day,in January, basketball game,see you,have a good time,have a birthday part 重点句型 1.-When is your birthday?  -My birthday is on June 5th/1st/2nd/3rd. 或 It’s on June 5th/1st/2nd/3rd. 2.-When is his/her birthday? -His/Her birthday is on June 5th/1st/2nd/3rd. 或 It’s on June 5th/1st/2nd/3rd. 3.-When is Amy’s/father’s/Mike’s birthday? -Amy’s/father’s/Mike’s birthday is on June 5th/1st/2nd/3rd. 或 It’s on June 5th/1st/2nd/3rd. 4.-When is Children’s Day/National Day/Women’s Day/New Year’s Day/Spring Festival/Tree Planting Day/Teachers’ Day/Army Day/May Day/Mid-Autumn Day/Dragon-Boat Day/Lantern Day? -It’s on 1st June/1st October/8th March/1st January/…… 语法 一、when 疑问副词，“什么时候”，对年、月、日以及时刻进行提问或询问某一动作发生的时间。

When are you at home? When do you go to school on Monday. 二、十二月份及其缩写 一月 January, Jan.; 二月 February, Feb.; 三月 March, Mar.; 四月 April, Apr. 五月 May, May; 六月 June, Jun.; 七月 July, Jul.; 八月 August, Aug.; 九月 September, Sept.; 十月 October, Oct.; 十一月 November, Nov.; 十二月 December, Dec. 三、时间介词：in on at 1. in+一段时间 in 1999 2. on+具体的某一天 on 2nd May 3. at+时刻 at 7 o’clock 四、英语中日期的表达方法 1. 美式英语日期表达法： 月 日， 年 日可以写成序数词或阿拉伯数字 June 5th，1995 或 June 5，1995 2. 英式英语日期表达法：日 月，年1/1st February, 1995 读”时“日”一定要读作序数词，并在前面加定冠词 the。

The first February, nineteen ninety-five. 五、day 和 date 的区别 1. date“日期”，常指“几月几日”，表达方法：“月 日，年” What’s the date today? It’s November 15th, 2013. 2. day “天”，指 24 小时，一整天What day is it today? “特定的重大的日子、节日”Today is 1st May. “白昼”，与 night 相对Day and night 六、名词所有格 表示人或物的所有及其所属关系 1.’s 所有格、of 所有格、双重所有格 2.‘s 所有格的构成 多用于有生命的名词或表示时间、国家、城镇、机构的名词 (1)单数名词在词尾+’s (2)复数名词:以-s 或-es 结尾的在词尾+“’” (3)复数名词:不以-s 结尾的在词尾+’s 3.Of 所有格的构成：“名词+of+名词”，多用于无生命的名词 A picture of China 4.双重所有格 Of 所有格与’s 所有格的结合 A friend of my father’s 5.名词所有格的用法 (1)表示有生命的人或高级动物的所属关系。

It’s my sister’s schoolbag. (2)表示国家、城市、时间等名词的所属关系Where are today’s newspaper? (3)表示无生命的名词所有格一般用 of 短语The map of China. (4)所有格后带有地点名词时，地点名词可省略Let’s go to doctor’s. 七、序数词 表示事物的顺序的数词，其作用相当于名词或形容词 1.序数词的构成及其缩写 速记歌诀：一二三特殊记，其它加 th 就可以； 八去 t，九去 e，-ve 要用 f 替； 整十变化要注意，变 y 为 ie 再加 th; 若是遇到“几十几”，只变个位就可以； 前有定冠词 the 别忘记 2.序数词的用法 (1)the+序数词，表顺序The first (2)作名词的定语，但前有物主代词修饰的除外The/Her fourth birthday. (3)表示英语中的分数分子用基数词，分母用序数词，若分子大于 1，分母加-s Two-thirds two fifths (4)a/an+序数词:表原有基础上的“又一、再一” (5)the+序数词+名词：表示编号。

名词+基数词 The second unit=Unit 2 Unit 9 My favorite subject is science 重点单词 Favorite,subject,science,P.E.=physical education,music, math,Chinese,geography,history,why,because,Monday,Friday,Saturday,free,cool,onTuesday,Wednesday,Thursday,Sunday,A.M.,P.M.,useful,from,Mrs.,finish,lesson,hour,playgames,the next day,for sure,have math,from……to,be free=have time,have fun=have a good time=enjoy oneself, have fun doing sth,finish doing sth,for two hours 有关学科的名词： Chinese, math, English, physical, chemistry, 重点句型 1.-What’s your favorite subject?/What subject do you like best?/Which subject do you like? （What’s…… favourite……？） -Music. -Why do you like music? -Because it’s interesting. Because 和 so,though 和 but 在句中只能有其一。

2. -Who is your music teacher? -Mrs. Green. 3.-When is the /your music class? -It’s on…… 语法 1.特殊疑问句： 特殊疑问句是对句中某一部分内容提出质疑的问句，是指以 what, who, when, where, why, how 等开始的问句，不能用 yes,no 回答 2.倒装结构：疑问词+一般疑问句(语序)？ 3.陈述语序：疑问词+谓语+宾语、状语？ (1)what， “什么”， 用来询问姓名、 物品、 数学运算的结果或什么时间做什么事等如 what colour, what grade, what class (2)who，“谁”，用来询问人Who is your math teacher? (3)why， “为什么”， 询问原因， 回答多用连词 because 引导的句子 Why do you like science? 以 why 开头的否定疑问句多表示建议或请求Why don’t you have a try? 。