1. Hi, are you new here?
嗨，你是新搬来的吗？
还能这样说：
Hi, are you just coming here?
Hi, are you a new-comer?
谚语：
You can't put new wine in old bottles!
旧瓶不宜装新酒。
2. They are my new neighbors.
他们就是我的新邻居。
还能这样说：
They just moved to my next door.
They are new here and adjacent to my house.
应用解析：
a new broom 新官小任（三把火）；
teach an old dog new tricks 使守旧的人接受新事物；
good as new 完好如新
3. You have a very nice house here.
你们的房子真漂亮。
还能这样说：
That is a nice house you have.
How beautiful your house is!
谚语：
Burn not your house to get rid of the mouse.
不可因小失大。
4. Drop around some time.
有空就顺便来坐坐。
还能这样说：
Drop by when you have more time.
I hope you'll look in to see us now and then.
谚语：
The last drop makes the cup run over.
超过限度的微小事情也会酿成重大后果。
5. Could you help me up with this sofa?
你能帮我搬一下沙发吗？
还能这样说：
Could you do me a favor to move the sofa?
Would you lend a hand to move the sofa?
谚语：
Every little helps.
点点滴滴，全有助益。
6. Please tell me if I can help.
有什么能帮忙的请告诉我。
还能这样说：
Please don't hesitate to ask me for help if you need.
When necessary, please tell me to aid.
应用解析：
There is no telling. 无法知道；难以预料。
I'm telling you. 我说的是真的；你放心。
7. Hi, do you have time and chat with me?
嗨，你有时间聊会儿吗？
还能这样说：
Hi, are you free to chew the rag with me?
Hi, do you have time to visit with me?
应用解析：
office chat 办公室闲聊；
chat groups 聊天室；聊天组；
free chat 闲聊，灌水；
have a chat with 与……闲聊
8. It's known that they're having an affair.
大家都说他们之间关系暧昧。
还能这样说：
It is said that they are intimate.
People all say that they have an ambiguous relationship.
应用解析：
have an affair with sb. 与某人有不正当的男女关系；
love affair 恋爱事件；风流韵事；
pretty state of affairs 窘境