（新教材）2021-2022学年人教版英语必修第一册课件：UNIT 3　SPORTS AND FITNESS PERIODⅢ　DISCOVERINGUSEFULSTRUCTURES .ppt

1、Unit 3Sports and FitnessPeriod Discovering Useful Structures附加疑问句读下列教材原句并感知黑体部分的共性。1Its not a real sport,is it?2That sounds interesting,doesnt it?3Hi!Its a beautiful day,isnt it?4By the way,our school soccer team won at last,didnt they?5The Sports Day is coming soon,isnt it?我的发现：附加疑问句由两部分组成，前一部分是一个(

2、1)_，后一部分是一个简短的(2)_。前后两部分的人称和动词(3)_要保持一致，并遵循“前肯定后否定，(4)_”的原则。陈述句问句时态前否定后肯定附加疑问句又称反意疑问句，主要用于口语，其作用是说话人向对方验证自己的陈述或者判断，也可以用于祈使句表示请求或者建议。探究点1:附加疑问句的一般结构陈述句(主语谓语)，助动词/情态动词/be动词主语(代词形式)?陈述句部分如果是肯定句，其附加疑问句部分用否定式提问(助动词/情态动词/be动词not);如果陈述句部分是否定句，其附加疑问句部分用肯定式提问。He is your teacher,isnt he?他是你的老师，是不是？People shou

3、ldnt drop litter on the pavements,should they?人们不应该在人行道上扔垃圾，对不对？You found the key in the bedroom,didnt you?你在卧室里找到的钥匙，对不对？They have a house in town,havent they/dont they?他们在城里有一套房子，是不是？陈述句中有否定副词 hardly,never,seldom,little,few,nowhere,nothing等时，附加疑问句部分用肯定式提问。Frank hardly goes to parties,does he?弗兰克很少

4、参加聚会，对吗？He has few friends,does he?他朋友很少，对吗？探究点2：附加疑问句中主语的用法1(1)陈述部分主语是指示代词this,that或不定代词everything,something,nothing等，疑问部分主语用it。Everything is ready,isnt it?一切都准备好了，不是吗？That was a long time ago,wasnt it?那是很久以前的事了，不是吗？(2)陈述部分主语是不定代词everybody,anyone,somebody,nobody,no one 等，疑问部分主语常用they，有时也用he。Everyon

5、e knows the answer,dont they？/doesnt he?每个人都知道答案，不是吗？Nobody knows about it,do they/does he?没有人知道这件事，是吗？2陈述部分主语是one时，疑问部分主语用one或you。One can never be too careful,can one/you?一个人越小心越好，不是吗？3陈述部分是there be 句式时，疑问部分主语仍用there。There will be a new school here,wont there?这里将会有一所新学校，是吗？4陈述部分是动名词时，疑问部分主语用it。Eati

6、ng too much is bad for our health,isnt it?吃太多对我们的健康有害，不是吗？探究点3：特殊句型的附加疑问句1祈使句的附加疑问句：表示肯定意义的祈使句，即表示“请求，提示”，其附加疑问句用will you;Lets引导的祈使句表示“建议”，附加疑问句部分用shall we。Close the window please,will you?请把窗户关上，好吗？Dont be late again,will you?别再迟到了，好吗？Lets have a rest now,shall we？我们现在休息一下，好吗？2含情态动词had better,附加疑问句

7、的动词要用had。Youd better read it by yourself,hadnt you?你最好自己读，好吗？The tree had better be watered often,hadnt it？这棵树最好经常浇水，不是吗？3陈述部分的谓语是used to 时，附加疑问句部分用didnt主语或 usednt主语。He used to take pictures there,usednt/didnt he?他过去常在那儿拍照，是吗？They used to have just one class in the morning,usednt/didnt they?他们过去早上只上

8、一节课，是吗？4感叹句的附加疑问句：一律用否定式提问：What a clever boy,isnt he?多么聪明的男孩，是不是？What a lovely day,isnt it?天气真好，对不对？5陈述部分含有情态动词must的附加疑问句(1)must表示“必须”，附加疑问句部分用mustnt。He must study hard at English,mustnt he?他必须努力学英语，是不是？We mustnt be late,must we?我们不能迟到，对不对？(2)must表示推测，“一定，肯定”，附加疑问句的动词与must后面的动词呼应。You must be joking,

9、arent you?你一定是在开玩笑，是不是？It must have rained last night,didnt it?昨晚一定下雨了，是吗？探究点4：I(dont)think 的附加疑问句1当陈述部分的主句是I think/suppose/believe等结构时，附加疑问句部分应与从句的主语和谓语动词一致，而且用否定式提问。I think he will come,wont he?我认为他要来，是不是？I think that he has done his best,hasnt he?我认为他已经尽力了，不是吗？2当陈述部分是I dont think/suppose/believe/

10、imagine 后接宾语从句时，附加疑问句应与从句的主语、谓语部分一致，而且用肯定式提问。I dont believe she has done it,has she?我认为她没有做那件事，是不是？I dont think that you can do it,can you?我认为你做不到，是吗？探究点5：并列复合句的附加疑问句1大多数复合句的附加疑问句都是对主句提问。He was punished because he violated the regulation,wasnt he?因为违反了规定他受到了惩罚，是不是？You never told me that you had been

11、 ill,did you?你从来没告诉我你生病了，对吧？2根据句意强调的重心来确定动词和主语(画线部分为重心)。Mr.Smith has been to Beijing for several times,so he should have been in China now，shouldnt he?史密斯先生去过北京好几次了，所以他现在应该在中国了，不是吗？All through yesterday crowds had been arriving and by midnight thousands of people packed the square，didnt they?昨天一整天，人

12、群不断涌入，到午夜成千上万的人挤满了广场，不是吗？探究点6：附加疑问句的回答不管是前否后肯，还是前肯后否形式的附加疑问句，回答都根据事实回答，肯定的回答就用“yes肯定结构”，否定的回答就用“no否定结构”，答案要和实际情况相符。She is good at English,isnt she？她擅长英语，不是吗？Yes,she is.是的，她擅长。/No,she isnt不，她不擅长。There isnt a computer in your room,is there？你的房间里没有电脑，对吗？Yes,there is不，有电脑。/No,there isnt是的，没有电脑.完成下面的附加疑问

13、句1It always rains at the weekend,_？2Few people knew the answer,_？3I am a student，_？4The old woman can hardly walk,_？5Something is wrong with my bike,_？6There used to be a lake,_？7To master a foreign language is not an easy job,_？doesnt itdid theyarent Ican sheisnt itusednt there/didnt thereis it8You

14、 must have got up late this morning,_？9I believe you can finish the job on time,_？10Lets have a party tonight,_？didnt youcant youshall we.完成句子1Im as tall as your sister,_ I?_(是的，你和她一样高。)2Michael Jordan started to play basketball in college,_ he?_(不，他不是。)He first played in a team in senior high schoo

15、l.3He ought to know what to do,_ he?_(是的，他应该知道。)arentYes,you are.didntNo,he didnt.oughtntYes,he ought to.4The 29th Olympic Games were held in Beijing,_ they?_(是的，是在北京。)5David has been to a boxing match,_ he?_(不，他没去过。)He always watches boxing on TV.6You cant cook,_ you?_(不，我会。)I m good at cooking.werentYes,they were.hasntNo,he hasnt.canYes,I can.温馨说明：课后请完成高效作业18