The chair could collapse if you sit on it, the apple might be poison, the dog might not bark, and in fact, this is my dog Tessie, who doesn't bark.
当你坐在椅子上的时候， 椅子可能会塌， 苹果可能是有毒的， 狗未必会叫， 事实上，这是我的狗泰西， 它不叫。