重点讲解：
1. go back 回去；返回；回到；
例句：He is now fit enough to go back to work.
他现在身体健康，可以回去工作了R%hjw3)DQD!VozL_Vi。
2. start over 重新开始；从头再来；
例句：If you choose a career that does not fit you, you can start over.
如果选择了一个不适合你的职业，你可以重新开始-ouZ,AkK%SyPYfhuF-。
3. look back 追忆；回顾；
例句：I still shudder when I look back on the past.
想起过去，我仍然不寒而粟Rx&SXHTNqKrQ+5Tx@D@。
4. work out (如期）发生；进展(顺利)；
例句：I'm afraid that it's not going to work out.
我恐怕这事不会成的Xh=05Da91Me8%G。