A topic sentence is the sentence that introduces or begins a paragraph, and every topic sentence has two parts.
One: it transitions from the previous paragraph.
Two: it highlights what's to come in the upcoming paragraph.
Example:
If you are writing a paragraph on air pollution and you have just concluded a paragraph on the effects of air pollution and plan to move on to a paragraph about what causes air pollution in the first place, your topic sentences might look like this:
With the effects of air pollution harmful growing each year, it is important to understand where the problems are coming from.
Source: Made by Ms. K with help from Microsoft Word Clip Art
Source: Made by Ms. K
