give somebody a hand
lend somebody a hand

I thought at first she was going to lend a hand.

I'll stand by and lend a hand if you want it.

But we never need to call them, for they know our needs and are always ready to lend us a hand.

Does he think I should have been up there, lending a hand?

"But in our time of need, some very special people came forward to lend us a hand."

I just thought I'd come up and lend a hand.

But it would be gone soon and then he'd lend a hand in the work.

Everyone knew everybody else and lent a hand when one was needed.

Her whole life she was ever one to lend a hand or a word to those in need.

For that's what we like to do best, lend a hand where a hand's needed.