what a terrible sight!All the trees were cut down,falling on

来源：学生作业帮编辑：百度作业网作业帮分类：英语作业时间：2024/08/17 01:46:12

what a terrible sight!All the trees were cut down,falling on the ground!这句话中的falling 为什么要改为fallen,我觉得falling是trees发出的是主动地,表示现在分词做伴随状语.
还有entering the woods,they found many trees fallen on the ground为什么也用fallen,我只知道fall是非延续性动词,fall的用法到底要注意什么

falling 是现在分词,表示正在进行的动作.
falling on the ground 指的是正在落到地上
fallen 是过去分词,表示发生过的动作.
fallen on the ground 指落在地上了
又如： falling leaves 正在飘落的叶子
fallen leaves 落叶（已经在地上了）

what a terrible sight!All the trees were cut down,falling on the trees were cut down by the workers.the trees 英语翻译to （） the trees.A,cut off B,cut up C,cut down D,cut on 2 几道英语选择如下1.All the trees in the forest were cut down for mon lots of trees were cut down and some kinds of trees () A.wer The leaves on the trees start falling down in autumn 同义句 Eighty（百分之……的） of the trees here were cut down by the farmer If the farmers cut down all the trees,the birds will have __ some people( )the trees in the forest A.cut down B.cut off In the picture,all the trees have been cut down.句子中为什么加been 连词成句cut we the trees will dirty get air the down if all T----- of trees are being cut down every day all over the wo