在英语作文中插入谚语（proverb）可以增强语言的表现力和说服力。以下是一些常用的插入谚语的技巧：

使用引导句

A proverb goes / says, "..."

As the saying goes, "..."

As a / the proverb has it / puts it, "..."

There is a proverb: "..."

使用双引号或不加双引号

如果要强调谚语，可以使用双引号，并将第一个字母大写，例如："A wise man learns from his mistakes."

通常情况下，如果不加双引号，谚语的第一个字母不大写，例如：a proverb says, "Practice makes perfect."

结合具体情境

在适当的上下文中引用谚语，可以使作文更加贴切和生动。例如：

"It's never too late to learn," as the saying goes, especially when you're starting a new language at my age.

使用不同的动词

可以使用不同的动词来引出谚语，例如：goes, says, states, has it, puts it等，例如：

A proverb goes, "Where there is a will, there is a way."

As the proverb says, "No cross, no crown."

结合人名

有时可以结合名人的话来引用谚语，例如：

Benjamin Franklin once said, "An investment in knowledge pays the best interest."

通过以上方法，你可以在英语作文中有效地插入谚语，使文章更具文采和说服力。