分词的五种形式 – CSS – 前端，css6属性大全

现在分词：1、直接加ing：如 sing – singing, keep – keeping；

2、去掉e后加ing：如 make – making, have – having；

3、重读闭音节结尾,双写末尾字母后加ing：如 sit – sitting, swim – swimming；

4、ie结尾的,改为y后加ing：如 lie – lying, tie – tying.

过去分词一般做定语,或者宾语补足语.如：he book left in the classroom yesterday is my English book.(leave—left 落下的).He walked into the forest,lost (lose–lost 迷失,迷茫)