help、discower、study、live、stop、eat、play的过去式和过去分词是什么？ 原形 过去式 过去分词help helped helpeddiscower discowered discoweredstudy studied studiedlive lived livedstop stopped stoppedeat ate eatenplay played played
live的第三人称单数形式，现在分词过去式各是什么 live的第三人称单数形式lives，现在分词living，过去式lived
live的过去式和过去分词 lived
