元音 >>
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比较[2U]、[2I]和[3I]>>
发[2U]音时，先是嘴巴放松并张大，嘴唇向两侧分开舌身放平，舌尖轻抵下齿，然后嘴巴收圆合拢，舌尖离开下齿，舌身后缩，舌后部向软颚抬起。>>
发[2I]音时，先是嘴巴放松并张大，舌身放平，舌尖轻抵下齿，然后嘴巴合拢，双唇向两侧分开，舌前部抬起一些。>>
发[3I]音时，先是下颌张开，嘴唇略呈圆形，舌身压低后缩，舌后部微微抬起，然后嘴巴合拢，双唇向两侧分开，舌身放松前探，舌尖轻触下齿背，舌前部微微抬起。>>
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Words>>
词首：oust, out, outback, outbalance, outcast, outgrow, >>
outright, outside, I, outweigh, outstretched , eyebrow, >>
ID card, iron, Irish, Ireland, eyewitness, ideology, idle, >>
isolation , oil-bearing, oilcake, oilcan, oilcloth, oilfield, >>
oil fired, oilman, oilrig, oily, oink>>
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词中：cow, dowdy, boundary, mouse, crowd, now, towSer, >>
blouse, astound, endowment, private, shine, surprise, >>
rice, choir, guide, five, hide, fine, hire, avoid, poison, >>
hoist, anthropoid, Royce, voice, soil, loin, turquoise, >>
groinA>>
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词尾：dye, pie, sly, try, my, sky, high, crucify, sanctify, >>
exemplify,alloy, decoy, convoy, destroy, envoy, >>
Troy, Roy, joy, ahoy, cloy, boy, coybrow, chow, >>
endow, Frau, plough, prow, Dow, thou, eyebrow, >>
kowtow>>
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Phrases >>
by ourselves royal family >>
make an announcemen have a sigh of relief >>
on the sidelines get home at nine>>
a pointed comment have an idea down the road
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