作爲雅思作文的最核心的內容，主體段的完整質量在很大程度上決定了考生最後的成績，因此完成結構合理，用詞準確的主體段就成爲高分作文的關鍵。下面是小編爲大家整理收集的關於雅思大作文主體段的7種擴展方法實例講解，希望對大家有所幫助。
(一)、舉例論證(Exemplification)
Sampler 1：亞洲國家正以驚人的速度變得西方化.以中國爲例,當青少年去看電影的時候,他們一般都選擇好萊塢大片而不選擇國產電影.
範文 1：The Asian countries are getting westernized at a staggering rate. Take China for example, when youngsters go to the movies, it is common for them to choose Hollywood blockbusters over domestic films.
Sampler 2：談大學教育的兩大功能：就業與求知
範文 2：To begin with, it is really helpful for university students to be taught some job-related skills that have already become a major focus of higher education. A typical example can be found inthe effort to develop their interpersonal skills now required by a growing number of companies as one of the most essential qualities of any job candidate.
句型：An interesting / striking / typical example of„ is provided by the story of sb. who…
Sampler 3：動物是人類的朋友.例如，海豚經常從沉船裏營救船員.
範文 3：Animals are human’s companions. To illustrate, dolphins often rescue sailors from sinking ships.
Sampler 4：大量證據表明，破裂家庭的子女出現情感、行爲障礙或觸犯法律的可能性是完整家庭子女的 2～3 倍。
範文 4：A large body of evidence proves that children from broken families are two or three times as likely as those in intact families to have emotional or behavioral problems or get into trouble with the law.
Sampler 5：個人教育與社會發展之間的關係(特別是)
範文 5：Decent education for every individual contributes significantly to the overall well-being of society, especially/particularly when their personal achievements amount to a driving force of social progress.
Sampler 6：學生的學習壓力(特別強調)
範文 6：It is not uncommon that school teachers nowadays tend to exert undue academic pressure on young students, with particular emphasis on consistently good performance in all sorts of tests and examinations.
Sampler 7：這點可以透過 „ 來說明
範文 7：It is evident from the information supplied that male are far more likely to commit point can be illustrated/emphasized by the fact that male offenders accounted for 96% of prison inmates.
(二)、引用論證
思路：引用“科學證據、研究成果、學術刊物、統計數據”
Sample ：員工和僱主能否都獲益於“在家上班” 範文：There is some incontrovertible to suggest that both employees and employers can benefit a lot from the growing trend of telecommuting. According to a recent article published in the world-famous Nature Journal, while the average telecommuter can save a considerable portion of their travel expenses, it is estimated that their companies can cut operational costs by almost one third if 25% of the staff are allowed to work at home.
句型：
l According to a recent article published in the world-famous Time Magazine, …
l According to a recent survey conducted by a group of American researchers of the University of Chicago, …
(三)、遞進論證
模板：To begin with → In the second place → Lastly
Sample 1：科學研究應由政府還是私人機構開展
範文 1： There are many reasons for entrusting scientific research to the governments rather than private companies.
[支援 1]To begin with, many large-scale and long-term research projects require substantial funding that only national governments can afford.
[支援 2]In the second place, first-rate scientists who enjoy international reputation are largely concentrated in government-sponsored research institutions.
[支援 3]Lastly, since most private companies are profit-orientated, the findings and conclusions from their research are more likely to be skewed or biased and even represent the interests of a small group.
剖析：
支援 1：大型、長期的研究項目需要大量的資金，通常只有政府有這樣的財力;
支援 2：一流科學家大量集中在由政府資助的研究機構中;
支援 3：私人機構大都以利益爲導向，故而得出的結果可能是歪曲或帶有偏見的，甚至代表某些小團體的利益。
注意： 不要用 Last but not least，否則引起考官反感，直接用 Lastly 即可!
句型：(適用說明缺點)
l One major problems/advantage/measure of
l Another big risk/benefit/sound approach is that„„
Sample 2：由廣泛使用手機所帶來的社會、健康和技術問題
範文 2：It has become increasingly apparent that the widespread use of cell phones gives rise to a number of problems in modern society.
[支援1]One major problems of using mobile devices too regularly is that they are posing a potential threat to human health in form of the microwave radiation emitted.
[支援 2]Another big risk is that cell phone technology is often manipulated and even abused to extract and sell users’ personal information to those unscrupulous marketing companies.
[支援 3]Furthermore, there is a third undesirable development: Since cell phones can provide criminals with increased mobility and accessibility to critical data, the number of unsolved crimesis steadily on the rise..
剖析：
支援 1：健康層面 - 微波輻射對健康構成潛在的危害
支援 2：技術方面 - 技術濫用，個人資訊被作爲商品賣
支援 3：社會層面 – 給犯罪分子作案增加了便利，導致懸案增加
釋義：
pose a potential treat(risks) to 構成潛在的危害(威脅)
unscrupulous 肆無忌憚的
undesirable 不受歡迎的，可能招致麻煩的
unsolved crimes 懸案
(四)、對比論證(Comparison and Contrast)
思路：正面思維枯竭時，可以換位思考(“逆向思維”)，透過 A 烘托出 B 的優/缺點
題目：探討老師應該教會學生辯明是否?還是隻負責課程教授而不管其他方面
提綱：
正面論述 1 道德品質的教育比知識更重要(遞進法)
正面論述 2 良好的行爲可以促進學生的學習進步(遞進法)
正面論述 3 最新的研究證據表明：優秀的學生往往兩面俱佳(引用法)
反面論述 1 放棄道德行爲的教育會產生許多問題(對比法)
範例：teaching students how to distinguish right from wrong is matter of utmost importance in education, especially during their formative years.
【支援 1】To begin with, such moral education is often regarded by most teachers as much more important than teaching them academic knowledge.
【支援 2】In addition, being fully aware of the difference between right and wrong effectively improves their own behavior, which can in turn facilitate their learning process.
【支援 3】According to a recent study conducted by a team of Canadian researchers of University of Toronto, many top students in high school not only perform well academically, but they also generally show decent behavior in a consistent way.
【支援 4】In sharp contrast, not providing young students with a proper moral education is a sure recipe for disaster because a number of serious problems may result from this failure.
釋義：
facilitate their learning process 促進學習(facilitate 便利、促進)
a sure recipe for disaster 災難性的後果
(五)、因果認證(Cause and effect)
思路：分爲兩類①講事物原因;②事情結果。
模板 1：Be 動詞 + 過去分詞 + 介詞
l be (directly) linked to ….
l be (strongly) related to …
l be (unquestionably) tied to…
l be (closely) connected with …
l be (largely) associated with …
模板 2：
l as
l since
l due to
l owing to
l hence
l thus
l therefore
l as a consequence/result/consequently
l thereby:以此達到„目的(不能用在句首,而且後面是加動名詞)
題目 1：生態問題正在被惡化,因此,我們必須採取措施解決環境問題.
範文 1：The ecological problems are being aggravated; therefore, it is imperative that we take measures to combat the pollution of the environment.
題目 2：政府應該提高公衆的環保意識,以此來促進可持續發展並且創造一個更適合人類生存的環境.
範文 2：The government should raise the public awareness of environmental preservation, therebypromoting sustainable development and creating a more livable environment.
模板 3：
l lead to „ (從句)
l give rise to „ (從句)
l contribute to „ (從句)
l result in „ (從句)
題目 3：Many people use distance-learning programs (study material post, TV, Internet, etc) to study at home, but some think that it cannot bring as benefits as attending college or university. To what extent to you agree or disagree with this opinion?
解析：屬於半支援半反對類型：
主體段一：提出反對理由 寫 distance learning 的好處(Benefits)
主體段二：提出支援理由 寫 distance learning 的壞處之一(Problem1)
主體段三：提出支援理由 寫 distance learning 的壞處之二(Problem2)
範文 3：(主體段二)
【主題句】Despite the convenience and relatively low cost of distance learning, it would be wise for us to consider it downside.
【支援 1】One of the biggest problems is that it cannot create an environment that is conducive to the students’ learning process, especially the much-needed interaction with their professors and classmates.
【支援 2】This may result in a terrible sense of disconnection and even social isolation among the learners.
【支援 3】In comparison, attending college or university is a more pleasant and exciting experience for young students as they can combine academic learning with a wide variety of social and extracurricular activities.
備註： 本段寫作模式爲“1+3”，即一個主題句+三個支援句。
【主題句】以 despite 爲引導 的讓步狀語從句開始，總結主體段一中分析的好處，可視爲“轉折法;
【支援 1】爲“遞 進法”;
【支援 2】爲“指代法”+“因果法”;
【支援 3】採用了“對比法”。
(六)、指代法
思路：用詞出現 this, that, these, those, it, they, such 等代詞，與其他方法配合應用
模板 1：This is clearly shown in the following example: „.(從句) +舉例法
題目 1：淡新聞報紙對人們思想的巨大影響→適用於傳媒/網絡類話題
範文 1：When it comes to how public opinion is formed, newspapers are unquestionably one of the strongest powers. This is clearly shown in the following example: many high school students in America who take the SAT are in the habit of citing articles from a wide variety of influential newspapers in their writing.
模板 2：This has already been proved by the case of „ +舉例法
題目 2：談越來越多年輕人失業的社會問題
範文 2：There is no denying that chronic youth joblessness is a contributing factor of social instability. This has already been proved by the case of increased criminal activities among unemployed or underemployed urban youngsters, many of whom even regard these wrongdoings as a way to make a living.
(七)、轉折法 套路：
l However, „. 從句
l Yet, „ 從句
l Nevertheless, „ 從句
l Nonetheless,„ 從句
l In spite of,„.