月光下的芙蓉
三个小时后。1) after three hours (用一般过去时; 例如:The car started to move after three hours.2). three hours later, (用一般现在时或者现在完成时),例如:The rain stops three hours later.They have begun to fight three hours later.
宝宝囡囡
EX:half an hour one\an hour one and a half hours two hours 是three hours 你说的是对的 大于一的时候加s