A thesis statement is a precise and concise statement that contains the gist of an essay or paper. A good thesis statement must show the reader what the paper’s main topic is and its purpose.
The thesis statement is always at the beginning of the paper or essay, what means it is part of the opening paragraph.
Some characteristics of a thesis statement are: it must use strong and decisive language, it has to provide some basic evidence and it should provide an overview of the topic discussed.