20个元音音素的长音和短音是什么

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20个元音音素的长音和短音是什么

一共两类单元音和双元音
单元音:
[e] yes yellow bed
[ae] cat bad dad
[a:] are car far
[כ] pot got dog
[כ:] call tall or
[۸] cut nut but
[3:]curtain further fur
[ə]mother color cooler
[i] ink big pig
[i:] jeep tea eat
[u] good book look
[u:] cool zoo tool
双元音:
[ei] age eight make
[ai] ice bike nice
[כi]toy oil boy
[əu] old joke gold
[au] cloud mouth cow
[εə] air fair chair
[iə] ear near year
[uə] cure dure pure