重点讲解：
1. chit-chat
闲聊；聊天；
eg. Not being a mother, I found the chit-chat exceedingly dull.
我没当母亲，所以觉得那样的闲谈无聊透顶。
eg. She's such an energetic girl and likes to chit chat with everyone.
她真是个精力充沛的女孩，喜欢跟每个人聊天。
2. on one's mind
担心；惦记；挂念；
eg. I just forgot. I've had a lot on my mind.
我完全忘了，我脑子里的事太多了。
eg. Mournful fancies came flocking on her mind, in crowds.
悲伤的幻想便纷纷涌上她的心头。
3. depend on
取决（于）；有赖（于）；
eg. A lot will depend on how she responds to the challenge.
在很大程度上将取决于她对这一难题的反应。
eg. But that all depend on the specific circumstances.
不过，那要看具体情况而定。
4. at hand
（空间或时间上）接近的，不远的；
eg. Having the right equipment at hand will be enormously helpful.
手头上有合适的设备将会帮上大忙。
eg. When he writes, he always keeps a dictionary at hand.
他写作时手边总备有一本词典。
5. fix up
装饰；修饰；整理；
eg. I've fixed up Matthew's old room.
我已经把马修原来住的房间装饰了一番。
eg. The whole block is being fixed up.
整个街区都在进行装修。