history: Our lawnmower is broken, and our neighbour offered to help us out by mowing our lawn. Our lawnmower is broken_comma_ and our neighbour offered to help us out by mowing our lawn. That's nice_comma_ pretty rare to have good neighbors these days it seems!
current: He's been a great neighbour.  Very thankful that he's been able to help.
next: You should have a beer with him or something to show your gratitude!