uy presents -- bought presents
take pictures -- took pictures
eat good food -- ate good food
sing and dance -- sang and danced
see elephants -- saw elephants
learn English -- learnt English
1.一般在动词后加"ed"(最多)
例:cook(做饭) cooked
2.以"e"结尾在动词后加"d"
like(喜欢) liked
3.不规则
be(am,is,are)(是) was ,were;
come(来) came;
begin(开始) began;
speak(说) spoke;
spend(花费) spent;
bring(带来) brought;
choose(选择) chose;
put(放) put;
fly(飞) flew;
go(去) went;
find(找到) found;