Past Simple
一般过去式
The past simple is used for actions that happened in the past and are finished.
一般过去式用于发生在过去并且已经完成的事情
They are not connected to the present.
与现在没有关联
例如：
I saw two movies last week.
Present Perfect
现在完成式
We use the present perfect for actions that happened in the past and are connected to the present.
现在完成式用于发生在过去并且与现在有关联的情况
例如：
They are still true, or might happen again.
I’ve seen two movies this week.
I saw two movies already this week and I might see more movies this week.
Past simple & present perfect
一般过去式&现在完成式
Past simple: for specific times in the past.
一般过去式：用在过去的具体时间
I saw that movie a year ago.
He met her last Thursday.
Present perfect: for non-specific times
现在完成式：用于非具体时间
I’ve seen that movie already.
He’s met her before.
Past simple: focuses on when.
一般过去式：关注在时间
I rode a horse last week.
He visited Tokyo in the summer.
Present perfect: focuses on what (experience)
现在完成式：关注于经历
I’ve ridden a horse.
He’s visited Tokyo.
We use the past simple to be more specific.
我们用一般过去式使表达更加具体
例如：
Have you ever been to London?
No, I’ve never been to London.
Yes, I’ve been to London.
Yes, I went to London last year.
Yes, I went to London when I was 8.
