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大学英语四级考试写作题型根据教育部颁布的大学英语教学大纲的要求，大学英语四级考试的命题形式有以下几种：首尾句作文、提纲作文、图表作文、命题作文、书信体作文等。第一节首尾句作文首尾句作文是根据段首（尾）句续写短文。段首句作文也称主题句作文，因为作文题中所给的段首句往往是段落主题句。其特点是以题目为中心，一般情况下将文章分为三个段落，每段首句即为该段的主题句（topic sentences）。考生要按主题句的要求组织材料，提出论据，用一些辅助句（supporting sentences）来支持或说明主题句，写英文段首句作文要注意：所写的内容要紧扣主题，辅助句应围绕段首句续写。保证段内每个句子的内容与段首句紧密展开各个段落，如：例证、因果、定义、比较对比、程序等。要注意句与句之间，特别是段首句与辅助句之间的自然衔接。另外，所给的段首句有时是一个完整的句子，有时不是一个完整的句子，只是句子的一部分，这就要求考生一定要审好题。找出其中表示中心思想的关键词，围绕这些关键词去扩展、描述或说明。
作文提纲作文是要求考生根据所给出的作文题目和提纲（一般为中文提纲）进行写作。中文提纲大多是以三个单句的形式出现的。写提纲作文，首先要做的就是审题，并要仔细分析题目中所列举的提纲。审完题后应该根据提纲拟出三个英文的主题句，再在这些主题句的基础上扩展成文。在扩展的过程中一定要做到条理清楚，开门见山。
作文关键词作文是根据作文题目以及所给出的关键词写短文。关键词的数目由几个到十几个不等。写这种题型的作文，要特别注意关键词的作用。关键词是短文内容发展的“路标”，在作文思路和写作内容上起着决定乾坤的作用。因此，写出的文章要把所给的这些关键词都用上，可以一句中用上几个词，也可以几句中用上一个词，只要能做到恰到好处即可。而且，要学会根据所给关键词的语义群分段。如果所给的关键词可以分为三组，那么，短文就可以写成三段。如果给出的关键词是两组，短文就可以写为两段。再者，要把给出的关键词用在刀刃上，即各段的主题句以及结尾的主题句都应该有关键词。
命题作文要求就所给的作文题目进行写作。与其他作文相比，命题作文具有较大的自主性。因为同样的一个题目可以从不同的角度、用不同的文体来进行写作。例如“My Teacher”这个题目可以写成一篇记叙文，也可以写成一篇描写文。不管用什么文体，也不管从哪个方面来写，只要写出的文章切题、流畅、条理清楚、语言正确就是一篇好文章。然而，这种较大的自主性也会使考生感到困难。因为在有限的30分钟之内，要形成提纲，并写成短文并不是件易事。这就要求考生在写命题作文时首先一定要审好题，要仔细分析题意，搞清楚题目所涉及的范围，确定文章的中心思想，切忌跑题。再者，要选择正确的文体。最后，要围绕文章的中心思想，将写作素材进行分析、归类并写好写作提纲，包括：引言句、主题句和结尾句。
1)主语从句
it is common knowledge that honesty is the best policy.
it is well-known that…
it is self-evident/ conceivable / obvious / apparent that…
it goes without saying that… it is universally acknowledged that…
it is / that
2)宾(表)语从句
we cannot understand why he was so cruel to his roommates.
the problem is not who will go, but who will stay.
3)定语从句(限定性和非限定性)
as is shown/ demonstrated/ illustrated/ depicted/ described…in the cartoon/ picture/ graph/ table…,
there are many reasons why i want to study in your university.
it is estimated that tens of billions of pounds is spent on cigarettes every year in our country, which is a huge waste.
4)状语从句(时间，原因，地点，条件，让步，转折等)
when the man is enjoying the cigarette, the smoke becomes a monster (怪物) which will devour him.
whatever the reason, there are still some problems with student use of computers.
5)分词短语做定语或状语
prof. kang came to our university, giving us a lecture on how to acquire english better.
6)倒装句
only through these measures can we hope to solve the problem.
7)被动句
some measures should be taken to deal with the problem.
he is said to have accomplished a lot of great deeds.
it is believed that…
8)设问句
do you still remember the boy who cried wolf for several times so no one would trust him?
9)比较
1.the advantages far outweigh the disadvantages.
2.the advantages of A are much greater than those of B.
3.it is reasonable to maintain that ...but it would be foolish to claim that...
4.Aand B differ in several ways.
5.evidently, it has both negative and positive effects.
6.like anything else, it has its faults.
7.A and B has several points in common.
10)原因
1.a number of factors are accountable for this situation.
2.a number of factors might contribute to (lead to )(account for ) the phenomenon(problem).
3. the answer to this problem involves many factors.
4. perhaps the primary factor is that …
5. but the fundamental cause is that ...
11)结果
1. it may give rise to a host of problems.
2. the immediate result it produces is ...
3. it will exercise a profound influence upon...
4. its consequence can be so great that...
12)批驳
1)it is true that ..., but one vital point is being left out.
2) there is a grain of truth in these statements, but they ignore a more important fact.
3) some people say ..., but it does not hold water.
4) many of us have been under the illusion that...
5) a close examination would reveal how ridiculous the statement is.
6) it makes no sense to argue for ...
7) too much stress placed on ... may lead to ...
8) such a statement mainly rests on the assumption that ...
9) contrary to what is widely accepted, i maintain that ...
13)举例
1) a good case in point is ...
2) as an illustration, we may take ...
3) such examples might be given easily.
4) ...is often cited as an example.
14)证明
1) no one can deny the fact that ...
2) the idea is hardly supported by facts.
3) recent studies indicate that ...
4) there is sufficient evidence to show that ...
5) according to statistics proved by ..., it can be seen that ...
15)开篇
1) many nations have been faced with the problem of ...
2) recently the problem has been brought into focus.
3) recently the phenomenon has become a heated topic.
4) recently the issue has aroused great concern among ...
5) nowadays there is a growing concern over ...
6) never in our history has the idea that ... been so popular.
7) faced with ..., quite a few people argue that
8) according to a recent survey, ...
9) with the rapid development of ..., ...
16)结尾
1) from what has been discussed above, we can draw the conclusion that ...
2) it is high time that strict measures were taken to stop ...
3) it is necessary that steps should be taken to ...
4) in conclusion/to sum up,
5) there is no easy method, but ...might be of some help.
6) to solve the above-mentioned problem, we must ...
7) in summary, if we continue to ignore the above-mentioned issue, more problems will crop up.
8) with the efforts of all parts concerned, the problem will be solved thoroughly.
9) we might do more than identify the cause ; it is important to take actions to ...
10) taking all these into account, we ...
11) whether it is good or not /positive or negative, one thing is certain/clear...
