Assuming sea level, ISA conditions:
A320 with CFM engines - about 270kg/hr (600lb/hr) per engine at idle (taxy)
A320 with V2500 engines - about 330kg/hr (730lb/hr) per engine at idle
A330 with RR
Trent 772 engines - about 820kg/hr (1,800lb/hr) per engine at idle
Cruise fuel burn depends on so much, environmental conditions, cruise speed, altitude, weight, etc... but ballpark with a decent passenger load (total burn rates):
A320 - c.2,700kg/hr early in the flight (heavy) reducing to 2,300kg/hr before descent (lighter)
A330-200 with RR
Trent 772's - c.6,100kg/hr early in the flight (heavy) reducing to c.5,400kg/hr before descent (lighter)
Holding pattern at typical landing weights (again decent passenger load assumed) will be roughly:
A320 - 2,200kg/hr (total)
A330-200 - 4,600kg/hr (total)
Hope that helps.
I used to love the smell of Jet-A in the morning...