本帖最后由 Napery 于 2009-10-31 11:15 编辑
Purpose and Thesis
Writers choose from a variety of purposes for writing. They may write to express their thoughts in a personal letter, to explain concepts in a physics class, to explore ideas in a philosophy class, or to argue a point in a political science class.
Once they have their purpose in mind (and an audience for whom they are writing), writers may more clearly formulate their thesis. The thesis, claim, or main idea of an essay is related to the purpose. It is the sentence or sentences that fulfill the purpose and that state the exact point of the essay.
For example, if a writer wants to argue that high schools should strengthen foreign language training, her thesis sentence might be as follows:
"Because Americans are so culturally isolated, we need a national policy that supports increased foreign language instruction in elementary and secondary schools."
How Thesis is Related to Purpose
The following examples illustrate how subject, purpose and thesis are related.
The subject is the most general statement of the topic.
The purpose narrows the focus by indicating whether the writer wishes to express or explore ideas or actually explain or argue about the topic.
The thesis sentence, claim, or main idea narrows the focus even farther. It is the sentence or sentences which focuses the topic for the writer and the reader.
| Subject
| Purpose
| Thesis, Claim, or Main Idea
| Childhood experiences
| To express your feelings and explain how one childhood experience was formative.
| The relentless competition between me and my sisters distorted my easygoing personality.
| Heart disease
| To inform readers about the relationships between Type A personalities and heart attacks.
| Type A personalities do not necessarily have an abnormally high risk of suffering heart attacks.
| The death penalty
| To persuade readers that the death penalty should be used.
| Despite our belief that killing is wrong, a state-administered death penalty is fair, just, and humane.
|
Thesis statements/ Purpose statements
A thesis statement is a sentence that makes an assertion about a topic and predicts how the topic will be developed. It does not simply announce a topic: it says something about the topic.
Good: X has made a significant impact on the teenage population due to its . . .
Bad: In this paper, I will discuss X.
A purpose statement announces the purpose, scope, and direction of the paper. It tells the reader what to expect in a paper and what the specific focus will be.
"This paper examines . . .," "The aim of this paper is to . . .," and "The purpose of this essay is to . . ." are common beginnings.
This paper will examine the ecological destruction of the Sahel preceding the drought and the causes of this disintegration of the land.
The focus will be on the economic, political, and social relationships which brought about the environmental problems in the Sahel.
1.
A thesis statement makes a promise
to the reader
about the scope, purpose, and direction of the paper. It summarizes
the conclusions that the writer has reached about the topic.
A purpose statement makes a promise to the reader about the development of the argument but does not preview the particular conclusions that the writer has drawn.
2.
A thesis statement is generally located near the end of the introduction. Sometimes in a long paper, the thesis will be expressed in several sentences or an entire paragraph.
A purpose statement usually appears toward the end of the introduction. The purpose statement may be expressed in several sentences or even an entire paragraph.
3.
A thesis statement is focused and specific enough to be proven within the boundaries of the paper. Key words (nouns and verbs) should be specific, accurate, and indicative of
the range of research, thrust of the argument or analysis, and the organization of supporting information.
A purpose statement is specific enough to satisfy the requirements of the assignment. Purpose statements are common in research
papers in some academic disciplines, while in other disciplines they are considered too blunt or direct.
The following example combines a purpose statement and a thesis statement (bold).
The goal of this paper is to examine the effects of Chile's agrarian reform on the lives of rural peasants. The nature of the topic dictates the use of both a chronological and a comparative analysis of peasant lives at various points during the reform period. . . The Chilean reform example provides evidence that land distribution is an essential component of both the improvement of peasant conditions and the development of a democratic society. More extensive and enduring reforms would likely have allowed Chile the opportunity to further expand these horizons.
|