PartII 双元音双元音：有两个元音组成，嘴型有变化的过程，从大到小，从小到大，从扁到圆，从圆到扁。一般来说，前面的音重读，后面的音轻读双元音/ei/嘴型从大到小，从半开到合，由/e/过渡到/，嘴型是有变化的，不要偷懒，每个动作都要做到位。cake make namerain train waitday play way/ei/ 发这个音的字母和字母组合a ai ayPractice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 tail 2. grape plane name coat 3. time tape train snake 4. rain soap cake train双元音/ai/口型从张开到合，与字母“I”的发音一样，牙齿从张开到闭合。kite bike nice tiger cry fly try why tie pie buy/ai/发这个音的字母和字母组合i y ie uyPractice根据发音规则，找出每组中发ai的2个单词 1. rice good jam right 2. ship mine ice-cream mouse 3. cloud sit tie eye 4. write small tennis kite双元音/i/ 嘴型从圆到扁，从张到合，比较容易发。 oil boil coin boy toy/i/ 发这个音的字母和字母组合oi oyPractice根据发音规则，找出每组中发/i/的2个单词 1. soil hear soy cold 2. rabbit bed boy noise 3. walk voice boil word 4. tea enjoy toy milk双元音/au/由/a/和/u/组合，口形由大到小house mouse mouth cow how now/au/ 发这个音的字母和字母组合ou owPractice根据发音规则，选出不发/au/的单词 1mouse cloud arm clown 2. teacher trousers cow mouth 3. town dance flower house 4. tower blouse now baby双元音/u/嘴型从半开到小，是字母“O”的发音，舌位比较低，双唇收圆，舌后部慢慢抬高。nose rose over boat coat soap show window snow/u/ 发这个音的字母和字母组合o oa owPractice根据发音规则，圈出每组中发/u/的2个单词。 1. coat goat tree river 2. make bowl knife road 3. your white row coat 4. boat hen nose lamp双元音/i/ 双唇始终半开，嘴巴不要张得太大ear hear teardeer beer/i/ 发这个音的字母和字母组合ear eerPractice根据发音规则，圈出每组中发/i/的1个单词 1. bear beer fair tail 2. noodles pair near come 3. horse near tower air 4. ring king here three双元音/e/ 舌尖抵下齿，双唇半开hair chair pair pear bear wear/e/ 发这个音的字母和字母组合air earPractice 根据发音规则，圈出每组中发/e/的1个单词 1. bear idea pineapple tail 2. noodles pair climb come 3. horse house tower air 4. ring king hare three双元音/u/双唇从收圆到半开，注意不要不/发得太长了 poor tour sure pure/u/ 发这个音的字母和字母组合oor our urePractice根据发音规则，圈出每组中发/u/的1个单词 1. clear tourist pineapple tail 2. noodles pair climb fury 3. beard cure tower air 4. voice king pure engineer