You can't get rich without taking risks. 人不冒險不富。

　　The old man cannot walk without a stick. 那位老先生離開手杖就走不了路。

　　Don't go out without a coat: you'll catch your death. 別不穿外套出去，會得重感冒的。

　　I never see this picture without thinking of him. 每次看到這張照片，我都會想起他。