The introduction is the beginning of an essay , when the readers read your essay the introduction is basically going to tell them the main idea or the plot , the introduction supports the whole thing that you are writing , basically you are giving all the things that are going to be discuss.Without this the whole body of the text is not going to be explicit as necessary .
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He fell sad about the swallow
My friends Joe, Maria, and I drove into the city: last night we went to a concert in the park.