have a go

試しにやってみる（口語）

Let's have a go at it.

Have a go.　試してごらん

He had a go at shooting it.

Would you like to have a go at it?　あなたもやってみますか？

Let me have a go.  私にやらせて

He had a go at this and that but never tries to get a steady job.

彼はあれこれ食い散らすばかりで定職につこうとしない

I had a go at mountain climbing.

I had a go at triathlon.