创作编号：GB8878185555334563BT9125XW 创作者： 凤呜大王* 现在完成时定义 1. 表示过去不确定的时间发生的动作，对现在有影响。 2. 表示过去发生并持续到现在的动作。 规则动词：规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同。四点变化规则： (1）、一般动词，在词尾直接加“ ed ”。 work---worked---worked,visit---visited---visited (2）、以“ e ”结尾的动词，只在词尾加“ d ”。 live---lived---lived, (3）、以“辅音字母 + y ”结尾的动词，将 "y" 变为 "i" ，再加“ ed ”。 study---studied---studied,cry---cried---cried (4）、重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加“ ed ”。 stop---stopped---stopped,drop---dropped--dropped 不规则动词： ABC型 原型 过去式 begin began bear bore blow blew break broke choose chose draw drew drive drove do / does did fly flew forgive forgave forget forgot begun born,borne blown broken chosen drawn driven done flown forgiven forgotten,forgot 过去分词 原型 过去式 过去分词 give gave given go went gone know knew known grow grew grown lie lay lain ride rode ridden rise rose risen ring rang rung shake shook shaken sing sang sung be was/were been freeze write take wear see 原型 froze wrote took wore saw 过去式 could might should frozen written taken worn seen sink sank swim swam throw threw drink drank sunk swum thrown drunk 过去分词 can may shall AB型 过去分词 AAA型 原型 过去式 will would be was/were 过去式 burst cast cut hit hurt cost 过去式 beat 过去分词 原型 burst cast cut hit hurt cost AAB型 原型 burst cast cut hit hurt cost 过去分词 beat 特殊情况 read 过去式 brought bought built burnt caught dug felt fought beaten,beat read (read原形发音为/ri:d/，过去式和过去分词发音为/red/) ABB型 原型 read 过去分词 bring buy build burn catch dig feel fight brought bought built burnt caught dug felt fought 本文来源：https://www.wddqw.com/doc/9a7d3d115ff7ba0d4a7302768e9951e79a8969bc.html