The topic sentence usually occurs at the beginning of a ozziessay; it usually is the first sentence of the official academic abs. (Sometimes that's true, but the entry training, online lessons on the website, take this rule, if the instructions are different.) Sentences the first sentence in a paragraph is the topic, but more importantly, it is the most common sentences, paragraphs. It is ''common''? This means that there is no information in the offer, but to understand this sentence means that you, at this point will be discussed later.