All the student went climbing,but only Tom was left为什么是was left
问题描述:
All the student went climbing,but only Tom was left为什么是was left
答
追问 为什么是被留下,可不可以填had left或was leaving,be+过去分词 才能表被动 而left是leave“离开"'的过去分词 举个例子来说 Anna被打了.所以是说Tom被留下了.至于 had left和 was leaving.had left是过去的过去...