Present perfect
Explicación de vídeo
Ejemplos
Frase | Fuente |
---|---|
We've developed this ability because it makes evolutionary sense. | The security mirage |
It hasn't changed as we were growing up. | The security mirage |
But for other tumors and cancer types, the improvements have only been modest. | Can we eat to starve cancer? |
OK, who hasn't voted yet? | How stats fool juries |
Apparently, only three people have viewed episode one. | Scrubs: Interns, s01e02 - Our Meeting With JD |