The broad subject of a paragraph or essay is referred to as the theme. Topics are brief and are described with a single word or phrase. The primary concept is a whole phrase that incorporates the topic as well as the author's thoughts on it. A "subject sentence" is one in which the author expresses the primary point of his paragraph. The other sentences are called "supporting sentences." They make explicit what is implied by the subject sentence.
For example, consider this topic sentence: "Public schools have a negative impact on students' performance in math." The primary concept here is "public schools," and it functions as a subject for the two supporting sentences: "Students experience significant difficulty with mathematics concepts if they attend public schools." All three sentences are necessary to make clear that learning math is difficult for young people who go to school in the public system.
Now let's look at another topic sentence: "Math classes are not useful for everyone." As you can see, this topic sentence has only one idea rather than several as in the first example. It implies that learning math is difficult for some people but not for others. This topic sentence does not cover all the variations on the subject of learning math; instead, it points out one particular aspect of the problem that could be discussed further in detail.
The main idea statement sums up the subject and gives the reader a clear picture of what will follow.
For example, if I wanted to write about flowers, my subject sentence might be "Flowers are beautiful." This tells readers that I am going to talk about how flowers look and why they are valuable.
The main idea statement for this sentence would be "Flowers contain pollen and nectar for animals to eat and drink, which helps them reproduce." This statement sums up my entire thought on the subject and provides a clear image of what the rest of the essay will focus on - the importance of flowers for food production.
It's important to know how to write a good main idea statement because it serves two purposes: first, to clearly define the topic; second, to make sure that you include all relevant information related to the topic. For example, if I had written about flowers again but this time I chose daisies as my subject, I would not be including anything new or interesting about flowers. Even though daisies are pretty, they do not affect people in any way so they are not useful plants.
A subject sentence is a sentence that begins a paragraph by introducing the single issue that will be the emphasis of that paragraph. Similarly to how the thesis statement provides the primary concept of the document at the essay level, the subject sentence provides the key idea at the paragraph level. A good subject sentence makes clear exactly what part of the text is going to discuss this issue and why it matters.
Examples: "The topic sentence of this paragraph should make its point clear."; "This sentence is not the topic sentence because it does not tell us what part of the text is going to discuss equality."
Paragraphs should have two-sentence topics. That is, each paragraph should begin with a sentence that tells us what part of the text it is discussing and end with a summary sentence that restates this idea in one concise phrase.
For example, here are three paragraphs with different two-sentence topics:
First, we can talk about society's view on divorce. This can be done by mentioning examples from history (e.g., "Divorce has been accepted by most societies throughout history") or by discussing the effects of divorce on individuals ("Individuals who get divorced often suffer from low self-esteem").
Second, we can discuss different types of divorce. We can do this by explaining why some divorces are legal while others are not i.
A subject sentence is the opening sentence of a paragraph that outlines the topic and the paragraph's governing notion. A subject sentence should contain a topic, a governing concept, and the author's point of view. It can be as simple as "Cats have nine lives" or "Golf is a sport played with a stick." Both sentences are subject sentences because they outline their topics ("cats" and "golf") and because they express a viewpoint ("cats are funny" and "golf is fun").
Sentences that do not contain these elements are called non-subject sentences and usually appear at the beginning of paragraphs or within longer works such as essays and reports. For example, here are two non-subject sentences: "This is an essay about my favorite animal. Cats are cool." and "Golf is a sport that is fun to play." These sentences do not tell us what they are talking about because they lack topics and points of views.
Non-subject sentences are useful for providing context to readers, but they can't be used by themselves as part of a work of fiction or non-fiction. For example, a writer might use a non-subject sentence as an introduction to an essay, but he or she could not use it as an ending because it would leave out any conclusion.