In a paper directed at newcomers to the field, this introductory sentence might be appropriate. However, the bulk of the paper is accessible only to those sufficiently expert in the field to know ...
Every paragraph should include a topic sentence that identifies the main idea of the paragraph. A topic sentence also states the point the writer wishes to make about that subject. Generally, the ...
When combining two complete sentences with a conjunction ("and," "but," "or," "for," or "yet"), precede the conjunction with a comma. Example: Still, the sun is slowly getting brighter and hotter, and ...