免费下载教研课《Module7 Unit2 Grandma cooked fish》ppt课件
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 talk phone walk rain cook play watch listen help learn

ed

ed

ed

ed

ed

ed

ed

ed

ed

小提示:ed在清辅音后读/t/,在浊辅音后/d/.

/t/

/d/

小试身手:快快说出下列动词的过去式吧.