You see, if your essay has the same structure as every other one, any reader should be able to quickly and easily find the information most relevant to them.
The principle purpose of the introduction is to present your position (this is also known as the "thesis" or "argument") on the issue at hand but effective introductory paragraphs are so much more than that.
Finally, designing the last sentence in this way has the added benefit of seamlessly moving the reader to the first paragraph of the body of the paper.
In this way we can see that the basic introduction does not need to be much more than three or four sentences in length.
Following the thesis, you should provide a mini-outline which previews the examples you will use to support your thesis in the rest of the essay.
Not only does this tell the reader what to expect in the paragraphs to come but it also gives them a clearer understanding of what the essay is about.
Active voice, wherein the subjects direct actions rather than let the actions "happen to" them – "he scored a 97%" instead of "he was given a 97%" – is a much more powerful and attention-grabbing way to write.
At the same time, unless it is a personal narrative, avoid personal pronouns like I, My, or Me.
For proof of this, consider examples from both science and everyday experience.
Because this is the first paragraph of your essay it is your opportunity to give the reader the best first impression possible.