英现在完成时 VS 美一般过去时强调过去某一行为对现在的影响

英现在完成时 VS 美一般过去时强调过去某一行为对现在的影响

现在完成时态的使用。在英式英语中，现在完成时态强调的是过去发生的某一个行为对现在产生的影响。

例如: I have finished my homework, shall we play football?

I have missed the train, can I get a refund for the ticket?

而美式英语则不会这样表达，他们多半会说:

I finished my homework, shall we play football?

I missed the train, can I get a refund for the ticket?

另外，英式英语的现在完成时和美式英语的一般过去时都常用already，just 和yet.

I have already finished my homework, shall we play football.

I just finished my homework, shall we play football?

I haven't finished my homework,we can't play football yet.