ruler和teacher中字母組合er發短元音/ə/,類似發音的單詞還有:worker,sister,brother,daughter,computer,happier,winter,summer…
補充:or有時也發/ə/音,如doctor,conductor,professor,…
er通常讀長音/ə:/例如:term、her、higher
er在非重讀音節裏讀短元音/ə/,如:river、farmer、teacher
1、er,ir,ur,通常讀長音/ə:/.例如:term,her,girl,bird,nurse,hurt
2、or在/w/之後也讀/ə:/.在其他情況下讀/:/例如:word,worker,world,worm,afford,corn,horse
3、 er,ir,ur,or在非重讀音節裏讀短元音/ə/
如:river,farmer,teacher,doctor