"that" 在英语作文中是一个非常常用的词，它可以引导名词性从句、定语从句、状语从句等，使句子结构更加丰富和精确。以下是一些关于如何使用 "that" 的作文写作建议：

引导名词性从句

"that" 可以用来引导主语从句、宾语从句或表语从句。例如：

主语从句：That he will come is certain.

宾语从句：I don't know that she is coming or not.

表语从句：The problem is that we don't have enough time.

引导定语从句

"that" 用来修饰名词或代词，作为定语从句的引导词。例如：

The book that you gave me is very interesting.

引导状语从句

"that" 可以引导原因状语从句、目的状语从句、时间状语从句等。例如：

原因状语从句：That he was late was because of the traffic.

目的状语从句：He bought a car that he could travel more easily.

时间状语从句：I will call you that I arrive.

表示强调

"It is ... that ..." 结构可以用来强调句子中的某个成分。例如：

It is clear that he is not responsible for the mistake.

表示愿望或感叹

"That" 也可以用来引导表示愿望或感叹的从句。例如：

That I could stay at home today!

在写作时，要注意 "that" 的用法和含义，根据句子的结构和需要选择合适的引导词。同时，也要注意句子的连贯性和逻辑性，使作文更加流畅和自然。

希望这些建议能帮助你更好地使用 "that" 来写作英语作文。