by God

• 老天爷作证； 确实

by God的用法和样例：

例句

1. Honest to God, Mary, I'm not joking.
   老天爷作证，玛丽，我不是开玩笑。
2. If you dare to slap my face--by God, I'll lay you out!
   如果你敢打我耳光老天爷作证，我就宰了你！
3. He was indeed supported by your remarks.
   你的话确实给了他很大的鼓励。
4. As God is my witness,that's exactly what she said.
   我敢起誓，那确实是她说的。