Open shade. You have to have your subject without any direct sunlight on them.
Now you will have a dark shaded subejct and a bright background. In order to get the two closer together in exposure range you will need to add more light to the shaded subject (or you would expose for the subject and blow out your background). You can do this with reflectors or flash. Make sure if you do fill flash that you are using a good modifier. If you need a lot of flash, you will want it off camera and diffused with umbrella or softbox.
I prefer my whole image to be in the shade. Then I don't have to artifically light my subject and maintain proper exposure on both subject and background.