I hope this isn't too tricky for you. It introduces a couple of hammer ons and a pull off over what is otherwise two bars of Am and two bars of G.
Code:
E╓─────────────────┬─────────────────┬─────────────────┬─────────────────┐
B╟─0h1───────0─────┼─0h1───────0───0─┼─────────0h1─────┼─3───────1p0─────┤
G╟───────2───────2─┼───────2─────────┼───────0───────0─┼───────0───────0─┤
D╟─────2───────2───┼─────2───────2───┼─────0───────0───┼─────0───────0───┤
A╟─0───────0───────┼─0───────0───────┼─────────────────┼─────────────────┤
E╙─────────────────┴─────────────────┴─3───────3───────┴─3───────3───────┘
. .1 + 2 + 3 + 4 + . 1 + 2 + 3 + 4 + . 1 + 2 + 3 + 4 + . 1 + 2 + 3 + 4 + .
In this instance all you need for the G chord is your third finger on the low E. string at the third fret, then add the 1st finger for the hammer on and the 4th finger for the 3rd fret on the B string.
Cheers.