1、You can come and go as you please.
你来去自由。

【例句一】
I'm having a party on Saturday. It starts at 5 but you can come and go as you please.
我周六要开个趴体。五点开始，但是什么时候来什么时候走你可以随意。

【例句二】
Look, work doesn't start when you want it to. You can't just come and go as you please. Be here at 9 and leave at 6.
看，工作时间不是你定的。你不能说来就来说走就走。早上九点来，晚上六点才可以走。

2、I don't have a great rap
我不善于跟某种人打交道

【例句一】
The teacher doesn't have a great rap with his students because he doesn't like kids.
这个老师不太善于跟他的学生打交道，因为他不喜欢孩子。

【例句二】
I don't have a great rap with dogs. They tend not to like me.
我不太擅长跟狗狗打交道。它们都不太喜欢我。

3、As far as I'm concerned
在我看来…

【例句一】
As far as I'm concerned, this is the best cake I have ever eaten.
在我看来，这是我吃过最好吃的蛋糕了。

【例句二】
As far as I'm concerned, she should buy a new car instead of a used one.
在我看来，她应该买辆新车而不是买二手车。