动词-ing形式动词-ing形式也是一种非谓语动词,由“动词原形 ing”构成,因此具有动词的性质,有时也相当于一个名词、形容词或副词。动词-ing形式在句中可以担任除谓语以外的任何成分,有时态和语态的变化。典型例句:1.Seeing is believing.眼见为实。(动词-ing形式作主语和表语)2.This is a new type of self-winding watch.这是一种新款的自动上弦手表。(动词-ing形式作定语)3.She was lying in bed crying.她躺在床上哭。(动词-ing形式作状语)