单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,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-arrive,d,单元,+,单辅,,双写,辅音,,再加,ed,.,stop-stop,ped,以,辅音,+y,结尾的单词,去,y,变,i,,再加,ed,.,as,k,ed,discus,s,ed,fini,sh,ed,hel,p,ed,loo,k,ed,par,k,ed,pic,k,ed,wat,ch,ed,/t/,/d/,arri,v,ed,brea,th,ed,ca,ll,ed,clea,n,ed,enjo,y,ed,sho,w,ed,tur,n,ed,u,s,ed,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,d,called borrowed,movedmu:vd,welcomedanswered,在清辅音后面,t,askedfinished,helpedhelpt,passedpa:st,reached,在,t,音后面,id,wantedwCntid,startedsta:tid,d,音后面,id,neededni:did,countedkauntid0,