تفاوت forget و forget about

Question

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معنی forget about در جمله زیر چیست؟ دلیل استفاده از about چیست و چه تفاوت معنایی با forget بدون about دارد؟

But then something happened. I can't remember what and I forgot about my parrot for a while. And then suddenly, I couldn't see him anymore. 

Answer 1

 forget about یعنی "فکر نکردن به"، که یکی از معناهای forget همینه.

Forget the time you spent in prison. Those dark days of captivity belong in the past, and had better be forgotten about.