他自始至终都很努力。
He worked hard from start to finish.
from start to finish (idiom)
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
Nice writing!
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
他自始至终都很努力。
He worked hard from start to finish.
我们自始至终支持他。
We supported him all along.