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Be assertive and clear. Create a hook for your first sentence. Revise your introduction once you complete the essay.
Avoid apologizing to your reader by saying you are not an expert on the two topics or your opinion does not matter. Don't lead with a phrase like, “In my humble opinion”, or “I could be wrong, but I believe.” Instead, you should move confidently in your introduction, keeping in mind your thesis statement and the essay outline you created.  You should also avoid announcing your intentions in a straightforward and formal way. For example, skip statements like “In this paper, I will” or “The purpose of this essay is to”. Instead, your reader should be able to perceive the purpose of your essay through the first two sentences in your beginning paragraph. A hook, or attention grabber, can help to engage your reader right away, especially if your topic is dry or complex. Try to create a hook using these starting points:  An interesting or surprising example: This could be a personal experience of when a cat proved to be a better pet than a dog, or a scientific study that shows the differences between cats and dogs. A provocative quotation: This could be from a source you used for your essay or one that feels relevant to your topic. A vivid anecdote: An anecdote is a very short story that carries moral or symbolic weight. Think of an anecdote that might be a poetic or powerful way to start your essay. You can also look through your research for your essay for any note worthy anecdotes. A thought provoking question: Think of a question that will get your reader thinking and engaged in your topic. For example: “Did you always wish you had a cat but ended up with a dog when you were growing up?” Another technique is to write a temporary introduction, with your thesis statement, and then revise it or rewrite it once you finish your essay. If you feel stumped by the introduction, as you aren't sure what you are going to argue in detail or how your main argument is going to take shape, try writing your introduction last. The writing process can be an important way to organize your ideas, think through certain points, and refine your thoughts. Writing or revising the introduction once you are done your essay will ensure the introduction matches the body of your essay.