Simple Average(Close,10,1) would give you the moving average 1 bar ago on the curent bar. Average(Close,10,2) would on the current bar give you the moving average two bars ago.
The great advantage of this is that you will know what average you are using in advance. If you are using a 3 period moving average displaced one bar back then you will know the moving average you will be using tomorrow before tomorrow comes.
In the chart below there are two moving averages. The black line is a typical 20 period moving average. The green line is a 20 period moving average displaced 5 times into the future.
You can see that in this up trend there are fewer closes below the green line thus keeping you in the trade longer. With less whipsaw you don't get kicked out of the trade as often.