学习英语那么多年，看到这个视频才是醍醐灌顶。

所以说英语语法还是要外国人来讲。

视频里的黑人老师来自于尼日利亚，尼日利亚是英国的前殖民地，英语是尼日利亚的通用官方语言。所以说，尼日利亚人掌握的英语，语法特别标准。

Don't didn't，看这个视频之前，感觉国内那些英语老师都在瞎教。

这个黑人外教一秒钟说的清清楚楚。

再扩展一下，做个小总结吧，这是豆包总结的，总结的还是非常好的。

1. 一般现在时

- 中文：平时经常做
- 英文：I eat apples.
- 否定：I don't eat apples.
→ don't = 不

2. 一般过去时

- 中文：以前做过
- 英文：I ate apples.
- 否定：I didn't eat apples.
→ didn't = 没

3. 一般将来时

- 中文：以后要做
- 英文：I will eat apples.
- 否定：I won't eat apples.
→ won't = 不会 / 不

4. 现在进行时

- 中文：现在正在做
- 英文：I am eating apples.
- 否定：I am not eating apples.
→ not = 不（正在）

5. 过去进行时

- 中文：那时正在做
- 英文：I was eating apples.
- 否定：I was not eating apples.
→ was not = 当时没在

6. 现在完成时

- 中文：到现在已经做完
- 英文：I have eaten apples.
- 否定：I haven't eaten apples.
→ haven't = 还没

7. 过去完成时

- 中文：在过去某件事前就做完了
- 英文：I had eaten apples.
- 否定：I had not eaten apples.
→ had not = 那之前还没

8. 过去将来时

- 中文：过去说“我将要做”
- 英文：I would eat apples.
- 否定：I would not eat apples.
→ would not = 当时不会

一句话总结：

- 现在说不 → don't
- 过去说没 → didn't
- 到现在还没 → haven't
其他就跟着 am not / was not / had not / won't / wouldn't 走就行。

大家记住中文的意思，就不要记什么过去将来之类的，越记越迷糊。

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