He's been here for years, he should know the ins and outs of the job by now.
他在这里已经好多年,现在理应熟悉各方面的工作了。
If it hadn't been for your help, we would never have finished it.
如果没有你的帮助,我们永远完不成任务。
When we use a phrase like 'it serves him right', we are, in part, admitting that a certain set of circumstances has enabled justice to act of its own accord.