These Long Summer Days

[E/A]  [B] [E]  [E/A]  [B] [E]
[A]  [B]

You're just going from an E to a B but using a more open fingering than the barre
The bass is going from A to E, so pluck the open 5th & 6th strings to mimic that.
   [E/A]   [B] [E]
e|-7------0-----|
B|-9------0-----|
G|-9------8-----|
D|-9------9-----|
A|-0------9-----|
E|-x------0-----|

For the A* & B* (probably not the right name), use these little triads. Just slide from
A up to the B:
   [A]      [B]
e|-0------0-----|
B|-5------7-----|
G|-6------8-----|
D|-7------9-----|
A|-0------x-----|
E|-x------x-----|

If you want to play the bass notes along with the triads, you can use your thumb on the
string to get the A & B notes. You could play the A open as above, but I think it sounds
this way since the B isn't open:
   [A]      [B]
e|-0------0-----|
B|-5------7-----|
G|-6------8-----|
D|-7------9-----|
A|-x------x-----|
E|-5------7-----|