他成心跟我作对。
He deliberately works against me.
intentionally; deliberately; on purpose
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.
他成心跟我作对。
He deliberately works against me.
你为什么成心捣乱?
Why are you making trouble on purpose?