双元音课件.ppt

1、双元音,合口双元音与集中双元音,双元音是由两个音合二为一，发音时由第一个音向第二个音滑动过程中没有任何停顿。双元音发音饱满、圆润。第一个音长而响亮，第二个音短而模糊.前重后轻，前长后短避免把双元音单音化,合口双元音,/ei/u/ai/au/i/,/ei/,发音要点：口形由/e/向/i/滑动，下巴向上合拢，舌位随之抬高。a table;a plate;a cake;a radio;,Dialogues,1)A:What a beautiful cake!B:Yes,its Kates birthday cake.A:How old is she?B:She is eighteen today.A

2、:Happy birthday to Kate.,/ai/,发音要点：由舌位低、口型大的前元音/向舌位高、口形小的/滑动。发音时舌尖要抵住下齿。音素体验：a kite;a knife;a pie;a lighter;an icecream,Tongue twister,No need to light a night light on a light night like tonight.,/au/,发音要点：由舌位低，口形大的/a/向舌位高，口形小的后元音/u/滑动，结束时双唇收圆稍向前突。音素体验：a cow;a mouse;a house;a towel;,A:I need someon

3、e to help me with the housework.B:What do you want me to do?A:Well,milk the cow,kill the mouse,wash the towel,and clean the house.B:How could you find someone like that?A:Thats what I am worried about.,Get out of my house now.Ive heard so much about you.How about going downtown now？,/i/,发音要点：由后，低元音/

4、向前，高元音/i/滑动，口形由开，圆逐渐变为合，扁，尾音短促音素体验：a boy;a toy;a coin;oil,boil,A:I want to buy a toy for Roy.B:For Roy?You want to buy him another toy?A:Why not?He enjoys playing with toys.B:He enjoys destroying toys.Youd better not to spoil the boy.,u,发音组合：o ow oa代表单词：host nose tone hole note coke cope bowl know l

5、ow own boat coat,集中双元音,/i/e/-/u/,/i/,发音要点：从口形较扁，舌位较高的前元音向较低的中元音滑动。舌身向后缩，口腔呈自然张开状音素体验：deer,beer,ear,tear,Speak out,1)New Years Day is near.2)Were near the end of the year.,/e/-/,口形由半开变为扁平。音素体验：pear;bear;chair;a airport;,A:Lets go there,Cary.B:No,I dont want to go there.A:Why not,Cary?B:Im afraid of t

6、he bears on the stairs.A:Well.Theyre all plastic bears full of air.,/u/,舌后部抬高，口收圆，稍向前突，快速滑动音素体验：a tourist,poor,sure,Europe,Speak out,1)Hes from a very poor family.2)We were unsure about who was to blame.3)Im sure thats pure gold.,元音（20个）长元音/:/:/:/i:/U:/短元音/e/双元音/e/a/e/a/,练一练,找出红色字母和所给音标读音相同的选项。()1./i:/A eat B ear()2./i/A bike B fish()3./e/A bed B eraser()4./A face B cat()5./u/A foot B room()6./u:/A good B ruler()7./a:/A arm B bus()8./A duckB bat,Good bye!,Good bye!,