副词在英语中主要用作状语，修饰动词、形容词或其他副词，也可以引导状语从句。当副词引导名词性从句时，它通常在从句中充当状语。以下是一些具体的例句：

时间副词引导名词性从句

When I finish my work, I will go to the gym.

Although she is tired, she keeps working.

地点副词引导名词性从句

There you can see thousands of bikes running in all directions.

方式副词引导名词性从句

Old people can hardly walk as quickly as young people.

程度副词引导名词性从句

She sings beautifully.

频度副词引导名词性从句

Sometimes I get up early.

关系副词引导名词性从句

I remember the day when we first met.

Do you know the reason why he left？

这些例句展示了副词在名词性从句中的不同用法，它们可以作为时间、地点、方式、程度、频度或关系副词，引导从句并在从句中充当状语。希望这些例句能帮助你更好地理解副词在名词性从句中的功能。