He had intended to go, but on second thoughts, he gave up the idea.他本来想去，但进一步考虑后，打消了这个念头。Can I have a cup of coffee, please? - actually, on second thoughts, I'll have a beer.请来杯咖啡——说实话，我改主意了，来杯啤酒好了。Actually, on second thoughts, I don't think I want to go out tonight.说实在的，再想想，我今晚不打算出去了。