求一下个单词的过去式.过去分词和现在分词【急， buy bought bought buyingbring brought brought bringingfight fought fought fightingthink thought thought thinkingcatch caught caught catchinglose lost lost losingfeel felt felt feelingsleep slept slept.
sleep的过去式和过去分词？voice，sound，noise的意思、区别和用法、词性 slept slept[slZpt；sl？pt]动词sleep 的过去式.过去分词voice(尤指人的)声音 sound 声音的泛用语noise 刺耳的噪音或嘈杂的声音
sleep的过去分词是什么？ slept
sleep的单三，过去式，过去分词，ing形式 第三人称单数：sleeps过去分词：slept现在分词：sleeping过去式：slept
