雅思大作文9分攻略，接下来进入主体段写作的讲解。在雅思大作文中，我们需要写2个主体段对文章进行有力的支撑，每个主体段要求写5句话，这样才能确保每段话在100个单词左右，才能满足写作的字数要求。
想要写好主体段，需要我们在四个方面下功夫：planning, ideas, vocabulary, grammar。
Planning 和 Ideas 是保证我们的作文可以很好地扣题、有话可说且逻辑通顺的基础。我们在开始写作之前，首先应当根据自己的论点，想出一些适合的论据，并把这些论据进行合理的安排，如此才能写出一篇规范、通顺的文章。
想要在规范、通顺的基础上获得比较高的分数，就需要我们的 Vocabulary 和 Grammar 的能力了。能不能尽可能多地使用相关话题词，句式使用是否丰富且准确，都与我们是否能取得高分息息相关。
以上就是考生在练习主体段写作时需要注意的4个点，接下来我们来具体看一下主体段的写作方法。
主体段可以分为2种写作形式：
Firstly, Secondly, Finally
Idea, Explain, Example
1. Firstly, Secondly, Finally
当考生对某一论点有多个论据支持时，可以采用这种主体段写法。我们来看一个具体的例子：
题目：Some people believe that unpaid community service should be a compulsory part of high school programs. To what extent do you agree or disagree?
我们接下来要写的段落是反对这个观点。首先我们要想一些观点出来，并做出一个段落大纲。以下是一些反对的观点：
School timetable is full, no time for community service
Students’ work in other subjects would be affected
Teenagers might not want to do it (reluctant, no motivation)
有了这些观点，我们就可以清晰地把段落大纲列举出来了：
Plan: disagree for several reasons — 论点
School timetable is full, no time for community service — 论据1
Students’ work in other subjects would be affected — 论据2
Teenagers might not want to do it (reluctant, no motivation) — 论据3
看到这里，有考生会说，这不才4句话嘛，不是要求写5句吗？没关系，句子不够，例子来凑。我们可以在任何一个论据后面给出一个相关的例证。请看示例：
There are several reasons why I would argue against having compulsory community service for secondary school students. Firstly, the school curriculum is already full with important academic subjects, such as maths, science and languages. For example, I remember having an extremely busy timetable when I was at high school, and it would not have been possible to add to it. Secondly, students’ performance in other subjects would be affected if valuable study time were taken by charity work or neighborhood improvement schemes. Finally, I believe that teenage students would be reluctant to take part in any program of obligatory work, and this could lead to poor motivation and even bad behavior.
所以，总结一下，「Firstly, Secondly, Finally」形式的主体段需要我们写5句话：
Topic sentence
Firstly
Secondly
Finally
Example

注意：连接词并不会帮助我们取得词汇部分的高分，真正帮助我们提分的是相关话题词。大家可以看一下，我用绿色标出来的是连接词，红色标出来的是相关话题词。在练习中，我们真正需要下功夫积累的，是相关话题词，而没必要在连接词上过多浪费时间。
There are several reasons why I would argue against havingcompulsory community servicefor secondary school students.Firstly, theschool curriculumis already full with importantacademic subjects, such as maths, science and languages.For example, I remember having anextremely busy timetablewhen I was at high school, and it would not have been possible to add to it.Secondly,students’ performancein other subjects would be affected ifvaluable study timewere taken bycharity work or neighborhood improvement schemes.Finally, I believe that teenage students would bereluctantto take part in any program ofobligatory work, and this could lead topoor motivationand even bad behavior.
2. Idea, Explain, Example
当考生对一个论点只能想到一个或两个较少的论据的时候，需要用到这种主体段的写作形式，对论据进行深入挖掘，给出更多细节信息。还是刚才那个题目：
题目：Some people believe that unpaid community service should be a compulsory part of high school programs. To what extent do you agree or disagree?
这次，我们要写一段部分认同的段落，即认为自愿的社区服务更有利（此段作为主体段第二段出现）。我们先来给出一些观点：
Students more motivated if they can choose
Gain work experience, self confidence, skills
Good for CVs, career, university admissions, employers
我们可以发现，这些观点并不各自独立，它们都是“自愿的社区服务更有利”这个论点的延伸（原因、结果等），所以我们可以给出这个段落的大纲：
Plan: Voluntary (not compulsory) community service is positive — 论点
Students more motivated if they can choose — 解释1（为什么自愿的社区服务更有利？）
Gain work experience, self confidence, skills — 解释2（会导致什么？）
Good for CVs, career, university admissions, employers — 举例
将其扩展为段落：
On the other hand, theopportunityto dovoluntary community servicecould be extremely positive for high school students. By makingthese programsoptional, schools wouldensure that only motivated students took part.These young peoplewouldgain valuable experiencein anadult working environment, which could help tobuildtheirself confidenceandenhance their skills. Havingsuch experience and skillson their CVs could greatly improveschool leavers’ career prospects.For example, a period of voluntary work experience mightimpress a university admissions officer or a future employer.