Hevowedthathewouldneverdothatagain.他發誓絕不再作那樣的事。vow表示發誓。可在vow後加that引導出發誓的內容,也可用vowtodosomething。上句可寫成:Hevowednevertodothatagain.Hevowedtodohisbesttowinthegame.他誓言......