在雅思写作中，关于“国际快餐取代传统饮食”的主题，可以遵循以下结构来组织文章：

引言

简要介绍国际快餐的普及及其对传统饮食的影响。

表明自己的立场，例如：“In recent times, international fast food is gaining more popularity and it is starting to replace traditional foods in many countries.”

主体段落

第一段：讨论国际快餐对家庭的负面影响。

例如：“One of the negative effects of international fast food replacing traditional foods is its impact on family life. Fast food chains often offer convenience and affordability, but they may lead to a decline in family meals, which are essential for maintaining family bonds and cultural traditions.”

第二段：讨论国际快餐对社会的负面影响。

例如：“Moreover, the proliferation of international fast food can lead to a loss of cultural identity and diversity. As local cuisines are replaced by standardized, globalized options, there is a risk of eroding the rich culinary heritage and diversity that traditional foods represent.”

结论

重申自己的立场，并提出建议。

例如：“In conclusion, while international fast food provides temporary convenience and economic benefits, its long-term impact on traditional diets and cultures is largely negative. It is crucial to strike a balance between enjoying the benefits of fast food and preserving the integrity and diversity of our culinary traditions.”

建议

使用具体例子：在讨论负面影响时，可以引用具体的例子来支持观点，例如提到某些地区的家庭因快餐而减少了家庭聚餐的频率。

保持客观：尽管要表达个人观点，但也要尽量保持客观，避免过度情绪化。

注意字数：雅思写作通常有时间限制，确保在有限的时间内完成文章，并保持段落结构的清晰和连贯。

通过以上结构和内容，可以有效地撰写一篇关于“国际快餐取代传统饮食”的雅思作文。