Hamlet' s friends were anxious about him and came to look for him. They found Hamlet kneeling down and looking up at the dark sky praying to God. Hamlet noticed them coming to him. He stood up and sincerely asked them not to tell anyone what had happened that night. They all agreed and made a firm promise not to tell anyone about it, swearing on Hamlet' s sword.That very night Hamlet decided to pretend that he had gone mad in order to have a better chance to kill Claudius. He decided not to tell his plan to any of his friends except Horatio .Since Hamlet saw the ghost, he had often thought of his dead father and of his promise to the ghost. He became sadder each day. He was not a young, merry prince as he used to be. Before his father' s death, he was interested in many things, such as books, art, music and plays. But now he gave them all up. To everyone, he seemed to act very strangely. He became rude to everyone in the castle and behaved like a mad man.He hardly ever spoke to Ophelia , a beautiful lady whom he had deeply loved. Before, they would talk happily and take walks in the woods near the castle. He would talk to her so sweetly and gently that Ophelia was deeply in love with him. But now he was quite different. Therefore, Polonius, Ophelia' s father, did not want his daughter to love Hamlet anymore because of his strange behavior.哈姆雷特的朋友们很担心他的安危就来寻找他，他们发现哈姆雷特跪在地上，望着黑暗的天空向上帝祈祷。哈姆雷特注意到他们来了，便站了起来，很诚挚地要求他们不要把当晚发生的事告诉任何人。他们全都答应了，并且对着哈姆雷特的剑发誓，许下坚定的承诺绝不把这件事告诉任何人。就在那天晚上，哈姆雷特决定装疯以便有更好的机会去杀克劳迪斯。除了荷瑞修之外，他决定不把他的计划告诉他的任何朋友。自从哈姆雷特见过父亲的鬼魂后，他常常想到亡父以及他对鬼魂所做的承诺。他一天比一天更加悲伤，已经不再像是从前那位年轻、快乐的王子了。在他父亲去世之前，他对很多事情都有兴趣，例如读书、艺术、音乐和戏剧。但是现在他把那些兴趣都放弃了。对每个人来说，他的行为举止似乎非常怪异。他对城堡中的每个人都很粗暴，言行举止像个疯子一样。他几乎不曾跟他深爱的美丽的欧菲莉亚说过话。以前，他们会在离城堡不远的树林里散步，愉快地谈心。他会很甜蜜很温柔地跟她说话，因而欧菲莉亚深爱着他，但是如今他变了很多。因此，欧菲莉亚的父亲普罗尼尔斯因为哈姆雷特怪异的行为举止而不希望他的女儿再爱他。