Question

1.He usually went to see his teacher many years ago,but these years has seldom does so.为什么是‘ha

1.He usually went to see his teacher many years ago,but these years has seldom does so.为什么是‘has seldom does’ 呢？能不能详细解释一下呢？
2.Nobody in China kows how to operate that kind of machine in that years. "in that years"不是过去时吗，怎么know 不用过去时态呢
是这样 ：
He usually went to see his teacher many years ago but these years has seldom does so.为什么是‘has seldom does’ 呢？能不能详细解释一下呢？

2.Nobody in China kows how to operate that kind of machine in that year. "in that year"不是过去时吗，怎么know 不用过去时态呢

我是在书上看的，感到不理解。如果大家认为是错的，那对的是什么呢

Answer 1

1：前半句是过去式，是指仅仅发生在过去的动作，（与现在无关），后半句是现在完成时【these years】（是指过去发生的动作对现在产生的影响，而且以后也有可能继续）。错误：has seldom does为 has seldom done

注：一般有明显的过去时间，句子判断为过去式，没有明显的过去时间，则为完成时。

2.这个句子有明显的过去时间，句子判断为过去式。错误knows改为knew

要么是出现语法错误，要么是口语化很重

Answer 2

这两句都是病句。
1 He used to 过去常常用这个词 see his teacher many years ago，but these years he seldom does so 。
2 Nobody in China knew how to operate that kind of machine in that years . 是过去式挖。

Answer 3

不会是改错吧，我认为这两个句子都是错的。同楼主，求WHY