When do we use "as" and when do we use "when"?

[Danial2005]

Hi

As still a boy of ten, he started to work to support himself.

when still a boy of ten,he started to work to support himself.

Of the two sentences, which is correct or both are correct?

many thanks!

[Alan]

Hi danial2005,

To be honest I don't like either of those sentences. I would prefer:

Even as a boy of ten, he started ...

or

While stil a boy of ten, he ....

Alan
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[Danial2005]

Hi Alan

Thank you for your reply !

Best regards

Danial