Preposition Beyond

Beyond means on the far side of. It is a preposition. 

• The house is beyond the bridge.
• We will be safe when we get beyond the river.

Beyond can also mean exceeding, out of reach of and similar ideas.

• Your work is beyond all praise. (= too good to describe adequately)
• He is living beyond his income. (= He spends more than he earns.)
• This problem is beyond me. (= I can’t solve this problem.)

When beyond refers to time it means after.

• I cannot stay with you beyond Tuesday.