精选优质文档-倾情为你奉上非谓语动词作主语和表语的比较 一、不定式和动名词作主语与表语的比较表示具体的、一次性的或将来的动作用不定式;表示一般的、泛指的或习惯性的行为用动名词。如: _ is a good form of exercise for both young and old. (全国卷)A. The walk B. WalkingC. To walk D. Walk【分析】答案选B。a good form暗示泛指一般性行为,用动名词作主语。说明:有时这种区别并不很严格。但要注意:主语和表语要用同一种形式;平行结构中要用同一种形式。如: What do you think made Mary so upset? _ her new bike. (上海卷)A. As she lost B. LostC. Losing D