20个元音音素的长音和短音是什么

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