Here's one I just took to help explain, extremely bright day, extremely dark dog. I metered the shot to the fence (zoomed in to the fence and set the correct exposure, I had an aperture in mind but I had to throw this out the window, I'll explain why).
I flicked open the flash and the camera automatically locks to 1/200 of a second due to that being the cameras sync speed for flash. So in effect I only have 1/200 of a second (or slower) to play with. Now this would've been fine had I had a powerful flash unit to light up the background, but I would've needed something to contend with the light the sun was putting out! I also had to light up the extremely dark dog (but that's more of the on flash being not powerful enough). This restricts me greatly as the background could be suitably shot in 1/3200 of second, which is why my aperture gets chucked out the window, I now have to push my aperture as far as possible to meter the fence again to get the correct exposure, which as it turned out was F22 (still not perfect as you can see on the right hand side of the fence the highlights begin to blow out a bit). Now had I taken the photo with the dog there, at the original shutter speed and aperture, you wouldn't of been able to see her at all, she would've just been a silhouette.
I then was able to use my flash to fill in the incredibly dark dog, still the on camera flash is not perfect or powerful enough to light all of Millie (the dog) up as she is so dark.
I know this doesn't really help the ghosting (soft) images you're getting, that's due to the fast movement of the child, but this will certainly help you get a nicer exposure.