The forecast said rain, and sure enough, it started coming down in the afternoon.
Tips
history
Attested in Wu Jingzi's Qing-era novel 《儒林外史》, chapter 3: the narrator confirms that an unexpected turn of events played out exactly as predicted.
usage
Almost always clause-initial, tying a confirmed outcome back to an earlier prediction. Near-synonym of 果然 (sure enough) but more literary and emphatic.
