For more on the Daily Mail: How humans bred some dogs to be unrecognizable from their ancestors CONSTRUCTION OF THE PRESENT PERFECT Positive form: Subject + auxiliary have/has + past participle The past participle is the -ed form of the verb. Humans have...

You can use the present perfect when a past action has an impact on the present situation. Look, th e d og has broken his leg. The action took place in the past. We don’t care where or when. What matters is the impact on the dog’s present life: he has...

Use the present perfect when you want to talk about your life experience. In this case, what is really important is what happened and not when or where it happened. If it was the case, we would have used the preterit. When questioning someone’s life experience,...

The present perfect can be used when something started in the past and is still happening now. I have lived in Paris for 10 years. This example means that you started living in Paris 10 years ago and still live in the French capital city. So it is very...