I have been writing poetry for a long time now. I started writing in my school days.

This has been a trend for a long time; the days of lifetime employment are long since over.

I'd been bumming around in bands since my school days.

In the early days of picture-taking, the exposure shutter had to stay open for a long time, so you had to stay really still.

I've been an amature inventor for a long time.

I have been interested in V8s for a long time.