look back
phrasal verblook back (at something)
- to look again at something that you read or wrote earlier, in order to remind yourself what it said
回首（往事）；回忆；回顾 - Look back at your notes and summarize what you have learned.
回头看看笔记，总结一下学到的东西。
- Look back at your notes and summarize what you have learned.
look back (at/on something)
- to think about something in the past
回首（往事）；回忆；回顾 - to look back on your childhood
回顾自己的童年 - The look back at the 1970s as the good old days.
回顾20世纪70年代的美好时光。
- to look back on your childhood