在托福写作引论文中，通常遵循introduction- body-conclusion(引言段-主体段-结论段)的“三步曲”。Body(主体)段落提供了论证观点的理由，是整个文章的主体，在评分中占有很大的比重。例如一篇满分的雅思作文(9分)必须“presents a fully developed position in answer to the question with relevant， fully extended and well supported ideas”。这里的“fully extended / well supported”，必须通过主体段来体现。
1.Write a topic sentence for each paragraph you plan to write. Each topic sentence should relate to your thesis statement and introduce what the paragraph will be about. If you find that the topics you want to discuss do not support the thesis statement you have written， revise your thesis statement or reconsider your topic sentences.
(托福写作辅导提醒每个主体段都必须有一个明确的主题句)
2.Write ideas that support your topic sentences. The topic sentence for each paragraph tells the reader what the paragraph will be about. The ideas stated in the rest of the paragraph should all relate to the topic sentence.
(支持句必须围绕主题句展开)
托福写作评分标准指出新
从上面可以看出托福写作评分标准还是很严格的规定了一些问题的，大家在看过托福写作辅导后一定要改正自己的不足，以求以后的托福写作能有所进步。