the difference between British English and American English不要长篇大论的给我发具体的不同啊,只要简单的介绍一下就可以.120词左右 当然是用英语 也就是英语短文啦120词左右
问题描述：
the difference between British English and American English
不要长篇大论的给我发具体的不同啊,只要简单的介绍一下就可以.120词左右 当然是用英语
也就是英语短文啦
120词左右
答
Use of the Present Perfect
In British English the present perfect tense is used to express an action that has occurred in the recent past that has an effect on the present moment. For example:
I’ve (I have) lost my key. Can you help me look for it? In American English the following is also possible: I lost my key. Can you help me look for it?
Other differences involving the use of the present perfect in British English and simple past in American English include already, just and yet.