First of all, harriet has excellent qualities that everyone envies. Her sincere, friendly, gentle and humble personality has won many people's love in her works. At the same time, Harriet's excellent quality is precisely one of the moral qualities advocated in the novel. Although Mr. Knightley didn't recognize Harriet when he didn't know Harriet well, when Mr. Knightley got to know Harriet well, he completely saw and recognized Harriet's excellent character. The author uses the characters of Mr. Knightley in the novel to convey the author's values from beginning to end and guide the readers. We can draw a conclusion that Harriet's excellent personality charm and quality have been fully affirmed. Just like Emma, the heroine, she is an important way to express the theme of the novel deliberately set by the author, rather than a minor figure who is not very important to the development of the plot.
Secondly, Harriet was also arranged by the author to play a role in the plot conception of the novel, which promoted the further development of the plot of the novel. The novel emphasizes the uncertainty of Harriet's personal identity from the beginning. She is an illegitimate daughter, and her parents grew up in the headmaster's house. She doesn't know who her parents are, because Emma likes Harriet's personality and beautiful appearance. She foolishly thought that this beautiful girl might be the illegitimate daughter of a very powerful person. It is because of this special fantasy that Emma mistakenly thinks that Harriet and Elton are well matched in social status, so she tries her best to fix them up.
But there is almost no description of Harriet's psychology in the whole novel, so we can't judge Harriet's real thoughts, only according to her behavior characteristics. At the same time, a series of misunderstandings in the novel accelerated the rapid development of the plot-Emma tried to fix and encourage Harriet to confess to Frank, but she didn't know that this promoted Harriet's feelings for Mr. Knightley.
Finally, at the end of the novel, the comparison between Harriet and Emma is fully described. Harriet's determination to pursue is in sharp contrast to Emma's confusion. It is precisely because of her special feelings and naive personality that Harriet is smarter than Emma in choosing men in love, and she will choose men with better personality. After Harriet's love experience, Emma finally understood what she wanted. It is this ironic expression that makes everyone know the advantages and disadvantages of Harriet's humanity and re-recognize the heroine in the text more objectively.