UC知道Lesson23 A new house 新居
来源：百度知道 编辑：UC知道 时间：2024/05/25 20:55:34
Lesson23 A new house 新居
I had a letter from my sister yesterday. She lives in Nigeria. In her letter, she said that she would come to England next year. If she comes, she will get a surprise. We are now living in a beautiful new house in the country. Work on it had begun before my sister left. The house was completed five months ago. In my letter, I told her that she could stay with us. The house has many large rooms and there is a lovely garden. It is a very modern house, so it looks strange to some people. It must be the only modern house in the district.
问题：
1: Work on it had begun before my sister left.(为何不用过去时，而用过去完成时。工程这里没有谈到结束啊？）
2：The house was completed five months ago.（这句为何用一般过去时被动语态？而不用过去完成时的被动语态？）
先谢了
I had a letter from my sister yesterday. She lives in Nigeria. In her letter, she said that she would come to England next year. If she comes, she will get a surprise. We are now living in a beautiful new house in the country. Work on it had begun before my sister left. The house was completed five months ago. In my letter, I told her that she could stay with us. The house has many large rooms and there is a lovely garden. It is a very modern house, so it looks strange to some people. It must be the only modern house in the district.
问题：
1: Work on it had begun before my sister left.(为何不用过去时，而用过去完成时。工程这里没有谈到结束啊？）
2：The house was completed five months ago.（这句为何用一般过去时被动语态？而不用过去完成时的被动语态？）
先谢了
这个句子里my sister left是过去时，而work是在my sister left之前发生的，构成了过去的过去这种句式．所以用过去完成时。
过去完成时使用条件：一句话中必须有个过去的时间点，而且一件事情是在这个时间点之前发生的。所以过去完成时不能随便用。并且，这句话中有ago这个词，一般用一般过去时。
在我姐姐离开之前，工作已经开始了，是发生在过去的过去，所以用过去完成时。
看动词哦，complete完成是一次性动作，不能用来表示一段时间。所以用一般过去式。
愚见：
1、既然该工程在my sister离开之前建，过去的过去则过去完成时
2、five months ago 是个明显的过去时态的标志