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.
flight 和 fight 的过去式 flight是名词fight过去式、过去分词fought
fight的过去式是什么 fought 过去分词，过去式都是它
