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 - brought

feel - felt - felt

have - 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 - built

spend - spent - spent

send - sent - sent

有些不规则动词有两种过去式/过去分词，如：

learn - learnt/learned - learnt/learned

dream - 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 - broken

in-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 - given

forgive - forgave - forgiven 原谅

come - came - come 

become - became - become

stand - stood - stood

understand - understood - understood