On the first line of each verse the a/F is a chord that could just be played as an F, 
a bassier A is sounded other than the A in the standard F chord....i lift my ring finger 
play the open A like this:

--1--
--1--
--2--
--3--
--0--
-----
 a/F


C       dm          C      F       a/F
Lately you've been nowhere to be found
    C   dm      C           F             G
But not for the clouds that follow you 'round
       F     G         am             C
'Cause you believe the weight of the world
   F      G         F    C
Is on the shoulders of a girl

C    dm   C     F       a/F
It's just one of those days
C     dm     C     F       G
Don't let me get into your way
       F      G        am             C
'Cause you believe the weight of the world
   F      G         F      C
Is on the shoulders of a girl
      F     G         am             C
Yeah, you believe the weight of the world
   F      G        F       C
Is on the shoulders of a girl

Harmonica Solo:
F - G - F  - C
F - G - am - C

    F        G           am       C
And you must do what you can to believe
     F      G       F      C
That I have nothing up my sleeve