By Writing styles, Present perfect

Hoa Thai wrote: Hi Goodman, Maybe I should not touch your nerve again - You are so expressive and I am scared! (for your heart and for my embarrassment). Don't worry, I am all barks and I no bite! However, I must present my thought to find out what is wrong with it. Here I come. I haven’t...

Um….Where do I begin? Well, I am almost sure one or two of you on this forum may have already heard the story before. As I’d said many time before, learning English is much harder for Asians than Europeans for the simple fact that Asian langauges are not made up of alphabets, except Vietnamese....

If you wish to ask if it started in the past and it is still happening today, the present perfect seems to be the right choice: "Have women have been treated differently from men throughout history?" is just an example. Or "Have women and men often/as a rule been treated differently?" I've read...