A topic sentence is the leading sentence of a paragraph. The rest of the sentences should support the topic sentence. An example of a topic sentence on the subject of aliens might be, "There is ample proof that life beyond humanity exists in the universe."
support the topic sentence
An opinion would be the weakest support for a topic sentence in an essay.
Revise the details to support the topic sentence
They provide one extended example of the main point introduced in the topic sentence.
Support the topic sentence
The purpose of a topic sentence is to support the thesis and introduce the body paragraph.
A topic sentence in a paragraph about pet ownership should be a lead-in to what the paragraph is about. An example of a topic sentence is, Pet ownership is a great responsibility, but the rewards are worth it.
Example sentence - They were told repeatedly to stay on topic during the debate.
it should support the topic
support
The topic sentence should state the main idea that will be developed. The reader should easily be able to see the main idea, simply by reading the topic sentence. The topic sentence is usually the first sentence in the paragraph, and is the most important thought in the paragraph.