The only ways to get past someones defense like that is to either be quicker 
than they, or to fake them out or hit them with combinations. The quick thing 
is just training yourself to be faster than they are, so you can punch/kick 
faster than they can block. Faking them out is pretty straight foreward. 
Through a punch (or kick or whatever else) at them from one direction and 
through another punch from another direction. Some people it works better on 
than others.
The combination thing is what I would suggest. It is never ever helpful in a 
fight to through one punch/kick and back off. You may get lucky and hit them 
and thats only if they arent paying attention for some reason or just are 
really not too good. But throwing a bunch of punches and kicks in succession 
works really well. But you have to look for openings and use the fake out 
thing as well. Or you can give them a fake opening on you that you think they 
will go for and if they do then their guard will be much weaker and you may 
be able to get a hit in.
Perfect Practice Makes Perfect. Try different things. You will never know if 
they work until you try, and if you get hurt in the process oh well, you are 
in martial arts you are supposed to get hurt.

Wiz

> Any of you have this little problem when sparring? I
> always seem to never be able to get past someone's
> defense. When you do, they just turn around and kick
> you somewhere. It's like your opponent is always too
> 


P.S. If this sends twice, sorry. I think I sent it directly to the guys email 
the first time.