双元音
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双元音中国人说不好英语的一个重要原因就是双元音发得不够饱满，很多人读单元音和双元音没有什么区别，听起来十分费力。
双元音和单元音最根本的区别是：双元音在发音过程中有一个从前一个音向后一个音的滑动过程，前长后短，前重后轻，口型和舌位要随之变化。
双元音一律作长音处理。
一合口双元音⒀ /ei/ 口型由/e/向/i/滑动，发音过程下巴向上移动，舌位也随之抬高。
此音含有/e/和/i/两个成分，口型由半开到合。
前一个音的开口程度比/e/单独出现时要略小一些。
与字母A的发音相同发这个音的字母和字母组合a ai aya: cake name snake gate lazyai: rain train wait nail againay: day May play way awayea: great break steakei: eight eighty eighteeney: hey grey they obey●容易出现的错误①不够长，读成短音②不适当地把读成单元音根据发音规则，圈出下列单词中发音不一样的单词。
1.face wave sheep tail2.grape plane name coat3.time tape train snake4.rain soap cake train词组短语训练1 play a good game at chess下一手好棋2 save one’s face 顾全面子3 face the world and brave the storm 经风雨，见世面4 pave the way 铺平道路5 turn the scale in favor of 使形势变得有利于。
句子训练1No pains , no gains. 不劳则无获 2 Call a spade a spade. 实事求是3 It’s a pay day today今天是发薪水的日子4 Success came after many failures. 经过多次失败才能获得成功。
5 He made haste to say that he had made a mistake.他马上就说他犯了个错误。
⒁/ai /含有/a/和/i/两个成分，要注意音的滑动。
前一个音素a要发到位，够长够重，而尾音/i/相比之下则要弱而短。
口型由开到合。
读音与字母I的发音相同发这个音的字母和字母组合i y ie uyi: kite nice tiger write knifey: cry fly my sky try rhymeie: tie pie die lieuy: buy guy•根据发音规则，找出每组中发/ai/的2个单词.1. rice good jam right2. ship mine ice-cream mouse3. cloud sit tie eye词组短语训练1 turn a blind eye 视而不见2 fly a kite 放风筝3fight side by side 并肩战斗 4 high in the sky 在高空中5 do the right thing at the right time 在适当的时间做适当的事情6 reappear in my mind’s eye 在我眼前重现句子训练1Great minds think alike. 英雄所见略同。
2 Strike while the iron is hot. 趁热打铁3”Might is right” is the logic of pirates. 强权即公理。
4Time is on my side. 我可以等（有时间的优势）5The news spread like wildfire. 消息迅速传开。
6 On hearing that her dad died, she cried her eyes out. 一听到她爸爸去世，她便痛苦流涕。
7He sat by my right side. 他坐在我的右边8I can safely advise you to buy it. 我劝你买准没错9 The doctor advised my life to have a light diet. 医生要我妻子只吃容易消化的食物10 He was frightened out of his life and turned as white as a sheet. 他吓坏了，脸色苍白如纸。
⒂ /ɔi/ 舌位在和之间，然后慢慢向滑动，双唇从圆到扁，口型从开到合发这个音的字母和字母组合oi oyoi: oil boil coin join voiceoy: boy toy joy destroy annoy根据发音规则，找出每组中发ɔi的2个单词.1.soil hear soy cold2. rabbit bed boy noise3.walk voise boil word4. tea enjoy toy milk词组短语训练1 toil and moil 辛辛苦苦地工作2 enjoy your voyage 旅途愉快3toil on the soil 在土地上劳作 4 voice of joy 欢快的声音句子训练1I see your point. 我明白你的意思 2 Join us, boy! 和我们一起玩吧，孩子！3He could n’t avoid facing a difficult choice. 他无法避免这种两难处境4The boy gave voice to his joy over the new toy. 男孩儿见到新玩具高兴地叫了起来。
5She lowered her voice and her eyes were moist with tears. 她降低了声音，眼睛里浸满了泪水。
6 That’ the point. 问题就在这里。
7 He is a spoiled boy. 他是个惯坏了的孩子。
⒃ /au]/含有和两个成分，要注意音的滑动。
由向滑动，双唇慢慢收圆，舌后部抬起。
/u/只做口型，不需发音，嘴嘬圆发这个音的字母和字母组合ou owou: house mouse mouth doubt shoutow: flower cow how now down●容易出现的错误混淆/au/和/ɔ: /，/ɔ,/，特别是当他们在/l\、/n/等音前面的时候根据发音规则，选出不发[au]的单词。
1．mouse cloud arm clown2. teacher trousers cow mouth3. town dance flower house4.tower blouse now baby词组短语训练1 turn round and round 团团转2 outside working hours 工作时间之外3 in a roundabout way 间接地4 down south 南下5 out of town 城外6 count me out 别算上我7 a rounded vowel 圆唇音8 an out-and-out scoundrel 一个十足的恶棍句子训练1 There is no doubt about it. 这事无可置疑。
2 Read it loud. 大声读。
3 I doubt it. 我不信。
4The crow shouted down his suggestion.人们大声反对他的建议。
5 Sound in body, sound in mind. 有健全的体魄，才有健全的精神6 This is out-and-out power politics.这是彻头彻尾的强权政治。
7 Open your mouth and pronounce the sound loudly 张开口，大声读这个音。
8 Put it down on my account. 记在我的帐上9 Out of a clear sky there were enemies all around them. 突然间，他们的周围全是敌人。
10 “You are a coward,” Mr. Brown cried out 布朗先生喊道，“你是个胆小鬼。
”⒄/әu/ 这个音含有和两个成分，要注意音的滑动。
口半开，上下齿之间可放扁平的食指尖，由向滑动，双唇收圆。
与字母O的发音相同。
发这个音的字母和字母组合o oa owo: nose rose poen overoa: boat coat soap goatow:show window snow bowl根据发音规则，圈出每组中发/әu/的2个单词。
1．coat goat tree river2.make window knife road3. your white row coat4.boat hen nose lamp1go it alone 自己干 2 a game show host 一个娱乐节目主持人3 hold one’s own 坚持住4vote by a show of hands 举手表决5 go home 回家6 hoe one’s own row 自扫门前雪7blow one＇s nose 擤鼻子8 a cloak of snow 一层覆盖着的积雪9 pose for a group photo with his old fellows 摆好姿势和他的老朋友合影10 be old enough to know better 岁数不小应该懂事些了句子训练1 I hope so.我希望如此2 It’s an old story told by an old man.3 A rolling stone gathers no moss. 滚石不生苔。
（见异思迁，终无所获）4 No smoking. 请勿吸烟。
5 So far so good. 到目前为止，一切顺利。
6 There is no smoke without fire. 无风不起浪。
二集中双元音⒅/iә/从发/i/音开始，然后很快滑到/ә/发这个音的字母和字母组合ear eerear: ear hear tear near appeareer: deer beer engineer cheer pioneerere: here mereea: real area realize idea European根据发音规则，圈出每组中发/iә/的1个单词。
1. bear beer fair tail2 .noodles pair near come3 .horse near tower air4. ring king here three⒆/eә/ /e/是前元音，口型宽度在和之间，舌尖抵下齿，很快滑向/ә/发这个音的字母和字母组合air earair: hair chair pair fair airear: pear bear wearere: where thereare: share care dare glare mare根据发音规则，圈出每组中发/eә/的1个单词。
