Odie的英语课 947 Grammar | Present perfect tense 3

动词的过去分词规则动词的过去分词和过去式一样（第883-884课讲过）不规则动词的过去分词有些不规则动词的过去分词和过去式、和原形一样，如：put - put - put（发音没有变化）cut - cut - cut（发音没有变化）read /ri:d/ - read /red/ - read /red/（发音有变化）有些不规则动词的过去式和过去分词一样，和原形不一样，如：bring - brought - broughtfeel - felt - felthave - had - had有些不规则动词原形是-d结尾，过去式和过去分词变成-t结尾，如：build - built - builtspend - spent - spentsend - sent - sent有些不规则动词有两种过去式/过去分词，如：learn - learnt/learned - learnt/learneddream - dreamt/dreamed - dreamt/dreamed有些不规则动词的过去分词和过去式是不一样的，如：过去分词以-en结尾，如：write - wrote - written，break - broke - brokenin-an-un模式，如：drink - drank - drunk，sing - sang - sung有些不规则动词由其他动词构成，它们的变化是相同的，如：give - gave - givenforgive - forgave - forgiven 原谅come - came - come become - became - becomestand - stood - stoodunderstand - understood - understood