关于"过去式"He is boiling some eggs,He boiled some yesterday.一、这是

1.现在进行时变为一般过去时
2.改为过去进行时是he was boiling some eggs(只需改be动词is为其过去式was),而 yesterday已提示应为过去已完成的事而非过去正在进行,改为一般过去时或过去完成时(have/has+过去分词)比较恰当
3.
读音 例词
在浊辅音和元音后面 [d] called[kC:ld] borrowed['bCr3ud]
moved[mu:vd] enjoyed[in'dICid]
welcomed['welk3md] answered['a:ns3d]
在清辅音后面 [t] finished['finisNt] helped[helpt]
passed[pa:st] reached[ri:tNt]
在[t],[d]音后面 [id] wanted['wCntid] started['sta:tid]
needed['ni:did] counted['kauntid]