after all                                             
     Typical mistake:
     *We had a nice party with drinks and dancing; then, after all, we went home.

      After all does not mean finally.
      after all不是finally的意思。

      ...then, finally, we went home. (Or:... when everything was over, we went home.)然后，最终我们就回家了。（或者：......大家都不在了，我们就回家了。）
 After all has two meanings:
after all有两个意思：

1  'In spite of what was said before' or 'contrary to what was expected'.
‘不顾以前所说过的话’或‘与期待相反’
      I'm sorry. I can't come after all.（对不起。我到头没能来得了。）
      I thought I was going to fail the exam, but I passed after all.（我以为我通过不了考试，可是到头来我过了。）

     With this meaning, after all usually comes at the end of a clause.
有这种意思，after all通常放在句尾。

2  'We mustn't forget that...' This is used to introduce an important argument, or a good reason, which the person who is listening seems to have forgotten.
‘我们一定不能忘记......’这用来阐述重要的议论，或好的理由，这些似乎已经为听者所忘记。

       I think we should let Sylvia go camping with her boy-friend.（我认为我们应该让Sylvia和她男友一起去宿营。）
       After all, she's a big girl now. 毕竟，她现在是大姑娘了。
       It's not surprising you're tired. After all, you were up until three last night!  （你累了不稀奇。毕竟，你昨晚三点才睡觉。）                                                              

Used like this, after all usually goes at the beginning of a clause.
这样使用，after all通常放在句首。