Development of Emotions. Sad. Funny. Joyful

The child willingly participates in play or reading books if they experience inner uplift and interest. What helps to evoke this are your enthusiastic (artistic) reading of texts, pictures with clear plots, and characters with whom the little one can... easily identify themselves.
Yes, this is not just a book, it is a theater! Your child is the audience. Perform this mini-performance for them, let them truly see the full range of your emotions - joy, disappointment, resentment, fear, relief! Do not fear some excessiveness, it is quite appropriate in this case. It is precisely in this way, taking cues from you and in imitation, that children learn to express their feelings.