Question

Since that first trip three years ago,I've --- to the forest four times a year to pick up litter.

A.come B.gotten C.gone D.been
这题为什么选C而不选D？求解。

Answer 1

因为句中有一个表频度的副词four times a year 就说明pick letter的动作还会持续，用gone. 如果没有a year, 就用been. Compare with: 1.Since that first trip three years ago,I've gone to the forest four times a year to pick up litter. 自从三年前那第一次旅行，我每年都要去那片森林捡四次垃圾。 2.Since that first trip three years ago,I've been to the forest four times to pick up litter. 自从三年前那第一次旅行，我去那片森林捡过四次垃圾。

Answer 2

表过去完成的一个事实，不表持续的状态！懂

追问

去过那里四次不是has been to吗？

Answer 3

选c

追问

为什么呀