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She ate breakfast at 6:30 yesterday morning.
She is eating breakfast now.
She was eating breakfast at this time of yesterday.
She eats breakfast at 7:00 every morning.
She will eat breakfast at 6:00 tomorrow morning.
She ate breakfast at 6:30 yesterday morning.
过去
现在
将来
一般过去时态
过去进行时态
一般现在时态
现在进行时态
一般将来时态
过去
现在
发生的动作或行为
强调现在的状态
造成影响或结果
I have already eaten my breakfast.
我已经吃过早饭了。
发生在过去的动作或行为（eat breakfast) 对现在造成的结果就是“现在肚子是饱的”
I have already eaten my breakfast.
我已经吃过早饭了。
结构：
肯定句：have / has + 动词的过去分词
eg: She has already eaten her breakfast.
否定句：
She hasn't eaten her breakfast yet.
疑问句：