示例
A：He helped me, I can't do this.
B：How can you be so stubborn? He will be all right.
A：他帮了我，我不能这么做。
B：你怎么这么固执呢？他不会有事的。
A：Tell her you will leave her.
B：No, I can't do this.
A：告诉她你要离开她。
B：不，我不能这么做。