After____deeply,I dived into the river. A breath

题目

After____deeply,I dived into the river. A breath
e B breathes C Breathing D breath
为什么是breathing?而不是原型?

答案

非谓语句型,独立主格,我主动呼吸因此是ing.非谓语里没有动词原型这项,主动ing 被动ed ,.