/d/
arrived breathed called cleaned enjoyed showed turned used
• 规则动词过去式加“ed”后的 发音规则
• 清辅音：送气强，声带不振动。 • 浊辅音：几乎不送气，声带振动。 （送气指
从喉咙向口பைடு நூலகம்送出气流）
• 转另一个PPT
• （1）清辅音：／p／、／t／、／k／、／f／、 ／θ／、／s／、／W／、／t∫／、／ts／、／ tr／，再加上／r／、／h／，合计12个。 （2）浊辅音：／b／、／d／、／g／、／v／、 ／ð／、／z／、／3／、／d3／、／dz／、／ dr／再加上／m／、／n／、／η／、／l／、 ／j／、／w／合计16个。
在浊辅音和元音后面 [d] called borrowed moved[mu:vd]
welcomed answered 在清辅音后面 [t] asked finished helped[helpt] passed[pa:st] reached 在[t]音后面 [id] wanted['wCntid] started['sta:tid] [d]音后面[id] needed['ni:did] counted['kauntid]0
Grammar 动词过去式
①一般情况加ed. 清音 /t/ 浊元/d/ t,d后面读/id/.
②以e结尾，加个d. arrive-arrived ③单元+单辅，双写辅音，再加ed.
stop-stopped ④以辅音+y结尾的单词，去y变i，再加ed.
/t/
asked discussed finished helped looked parked picked watched