有三个问题：1、the ground is covered with fallen leaves.为什么用过去分词,而不是现在分词?2、the boy to write the letter needs a pen.不定式是做目的状语吗,为什么放在主语后?3、过去分词做宾补也可以表示

I found the ground was covered with snow.和I found the ground covered with snow.有神马区别 over the ground和on the ground有什么区别 I was found on the ground by the fountain啥用法有什么语法, I found him lying on the ground. i find a watch lying on the ground 和I find a watch is lying on the ground 有什么不同RT 英语翻译1Cut the ground from under sb’s feet2They are not prepared to give ground on tax cuts3Don’t let him persuade you-stand your ground.4Everyone agreed with me,so I knew I was on firm ground. 有三个问题：1、the ground is covered with fallen leaves.为什么用过去分词,而不是现在分词?2、the boy to write the letter needs a pen.不定式是做目的状语吗,为什么放在主语后?3、过去分词做宾补也可以表示 I can see many colour on the ground有什么错误 fell on the ground、fell to the ground和fell onto the ground有什么不同?最好有例句, I found a wallet on the ground . 就on the ground提问 I found a wallet on the ground . 就on the ground提问速度啊急用啊! I saw him playing football on the ground just nowplaying on the ground 是谓语？ i saw the ground fell away and down to the From the ground 的the为什么发i：的音? ground,earth,land这三个词有什么区别? I found a girl __（lie) on the ground i am looking for a flat on the ground floor I am look for on the ground floor