分詞的五種形式？

現在分詞：1、直接加ing：如 sing - singing, keep - keeping；

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

3、重讀閉音節結尾,雙寫末尾字母后加ing：如 sit - sitting, swim - swimming；

4、ie結尾的,改為y后加ing：如 lie - lying, tie - tying.

過去分詞一般做定語,或者賓語補足語.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)