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Grammar 动词过去式,一般情况加ed.清音/t/浊元/d/t,d后面读/id/.以e结尾，加个d.arrive-arrived 单元+单辅，双写辅音，再加ed.stop-stopped 以辅音+y结尾的单词，去y变i，再加ed.,asked discussed finished helped looked parked picked watched,/t/,/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。（送气指从喉咙向口外送出气流）转另一个PPT,（1）清辅音：p、t、k、f、s、W、t、ts、tr，再加上r、h，合计12个。（2）浊辅音：b、d、g、v、z、3、d3、dz、dr再加上m、n、l、j、w合计16个。,在浊辅音和元音后面 dcalled borrowedmovedmu:vd welcomedanswered在清辅音后面 taskedfinishedhelpedhelptpassedpa:streached在t音后面 idwantedwCntid startedsta:tidd音后面idneededni:did countedkauntid0,
