Word Preparation
- let someone know：让某人知道，给某人说一声
If you have any question, please let me know. 你遇到任何问题，请告诉我一声。
When he gets to the office, I'll let you know. 他到办公室的时候，我会告诉你。 - be more than welcome to do sth. 非常欢迎（某人做某事）
You are more than welcome to stay with me. 非常欢迎你留下来和我们在一起。
If you would like to wait, you are more than welcome to do so. 如果你愿意在这里等，我们非常欢迎 - double check：核实，再确认
I'm pretty sure that he's not coming, but I can double check the guest list.
我很确定他不会来，但是我可以再核对一下来宾名单。
Please double check all the information you provide before you submitting online.
在网上提交之前，请核实你提供的所有信息。 - Hello, (this is) ... speaking：您好，我是...(电话用语)
Hello, this is John Smith speaking. 您好，我是John Smith。（John Smith相当于中国人说“张三”。）
Hello, Mike Brown speaking. 您好，我是Mike Brown。（可以省略this is） - How may I help you? 我可以怎么帮你？需要我帮忙么？
Shop Assistant: Good morning, Sir. How may I help you? 先生早上好，您需要我帮忙么？
Customer: Oh, thank you. I'd like a pair of leather shoes. 噢，谢谢。我想买双皮鞋。
Waiter: Hello, Madam. How may I help you? 您好，女士，有什么需要我帮忙的么？
Customer: I'm wondering if we could move to that table. 我在想我们能不能换到那张桌子去。 - Would you like to leave a message? 您需要留言么？
She is not here at the moment. Would you like to leave a message?
她现在不在。您需要给她留言么？
- Would you like to leave a message? 你需要给他留言么？
- No, thanks. I will call him again later. 不用了，谢谢。我等下再给他打电话。
Grammar
Offering help 为他人提供帮助
除了How may I help you?，还可以说
- Do you need any help?
- How can I help you?
- What can I do for you?
- Is there anything I can help you with?
e.g.
- Hello. Do you need any help?
- Yes, I think so, thank you. Could you tell me how I can get to the nearest subway station?
- How can I help you, Madam?
- Oh, I'm wondering if I can open the window a little bit.
- Hello, Sir. What can I do for you?
- Oh, thanks, but I'm just looking around. May I ask you when I need your help?
- Is there anything I can help yoy with?
- Yes, thank you. Could you contact your school to see if they can arrange three classrooms for us on Saturday?