副詞 forever:

1. for a limitless time- P.P.Bliss
   同義詞：everlastingly, eternally, evermore
2. seemingly without interruption; often and repeatedly
   同義詞：always
3. for a very long or seemingly endless time
   同義詞：forever and a day

1. Many Pharaohs in ancient Egypt believe they can live forever.
   古埃及的許多法老相信他們可以永生。
2. The vassal swore that he would be loyal to the king forever.
   這位封臣宣誓他將永遠(yuǎn)忠誠(chéng)于國(guó)王。
3. You'll never see life if you stay at home forever.
   如果你一直呆在家里，就永遠(yuǎn)不會(huì)有生活經(jīng)驗(yàn)。
4. The lovers promised to be faithful forever.
   這對(duì)情人互相許諾永不變心。

for.ev.er

adv.（副詞）
For everlasting time; eternally:
永恒地；永遠(yuǎn)地：
例句：
No one can live forever.
無(wú)人能永生

At all times; incessantly:
無(wú)窮盡地；不斷地：
例句：
was forever complaining about the job.
總在抱怨工作

n.（名詞）
A seemingly very long time:
長(zhǎng)時(shí)間：表面上很長(zhǎng)的時(shí)間：
例句：
It has taken forever to resolve these problems.
花了很多時(shí)間解決這些問(wèn)題