fall down the well 中“down the well ”是不是介宾短语作副词表修饰down作介词,fal

第一个down表动作持续的状态,如go down the street.
第二个down表动作的方向,即向下.
这是我个人的见解,仅供参考.
你学习英语真用心.
再问： 那词性是什么呢？
再答： down 1 (doun) adv. 1. a. From a higher to a lower place or position: hiked down from the peak. b. Toward, to, or on the ground, floor, or bottom: tripped and fell down. 2. In or into a sitting, kneeling, or reclining position: knelt down; lying down. 3. Toward or in the south; southward: flew down to Florida. 4. a. Away from a place considered central or a center of activity, such as a city or town: down on the farm; sent down to work at the firm's regional office. b. Away from the present place. 5. To a specific location or source: tracking a rumor down. 6. Toward or at a low or lower point on a scale: from the biggest down to the smallest. 7. a. To or in a quiescent or subdued state: calmed down. b. In or into an inactive or inoperative state: The generators went down at midnight. 8. To or at a lower intensity. 9. To or into a lower or inferior condition, as of subjection, defeat, or disgrace. 10. To an extreme degree; heavily: worn down by worry. 11. Seriously or vigorously: get down to the project at hand. 12. From earlier times or people: tradition handed down from one generation to the next. 13. To a reduced or concentrated form: pared the term paper down to five pages. 14. In writing; on paper: wrote the statement down. 15. In partial payment at the time of purchase: put ten dollars down on the necklace. 16. Into or toward a secure position: nailed down the boards; bolted the furniture down. prep. 1. In a descending direction along, upon, into, or through: rolled down the hill; floating down the river; went down cellar. 2. Along the course of: walking down the street. 3. In or at: The cans are stored down cellar. 我认为两个均为介词。 prep. 1. In a descending direction along, upon, into, or through: rolled down the hill; floating down the river; went down cellar. 这里提到后面可以接into，符合你所举的第二种情况。 2. Along the course of: walking down the street. 这是第一种情况。