英语四级句型包括以下几种：

倒装句

句型特点：主谓语序颠倒，增强语气或强调内容。

常考类型：否定词开头（Never, Seldom, Not only...等）。

例句：

Never have I seen such a beautiful sunset.

Not only does he study hard, but he also volunteers.

虚拟语气

常考场景：与事实相反的假设（If条件句）。

例句：

If I were you, I would accept the offer.

If he had studied harder, he would have passed.

让步状语从句

引导词：although, even though, no matter how/what, while。

例句：

Although it was raining, they continued the match.

No matter how difficult the task is, never give up.

强调句型

句型特点：通过特定的结构来强调句子中的某个成分。

例句：

It is universally acknowledged that + 句子。- There is no denying that + S + V ...

固定句型

句型特点：一些常用的、固定的表达方式。

例句：

Who cannot emphasize the importance of .. too much.

It is obvious that + 句子。- Since + S + 过去式， S + 现在完成式。6. 开头句型：

用于引入话题或提出观点。

例句：

Nowadays, there is a growing concern over...

Some people believe that..., while others argue that...

表达观点句型

用于支持或反对某种观点。

例句：

I firmly believe that...

However, I hold the opposite view.

论证句型

用于论证某个观点或事实。

例句：

The reason why + 句子..... is that + 句子。- For instance,

这些句型在英语四级写作中非常常见，掌握这些句型有助于提高写作水平和考试成绩。建议多进行练习，并在实际写作中灵活运用这些句型。