月亮星座代表什么
Introduction
It is quite easy to introduce people to each other in English. One way is just to say the names, pointing at each person as you name them. Imagine you want to introduce Mary and Carmen to each other. First of all (talking to Mary), you can point at Carmen and say " Carmen", then you turn to Carmen and say "Mary". Or instead of just saying the names, you can say "This is Carmen"and "This is Mary". If you want to speak in a more formal way( perhaps to introduce older or more important people to each other), you can say to the first person, "Can I introduce Mr/Mrs X?", or "I don't think you'". When you speak to the second person, you can just say "This is ...".
    When people are introduced, they usually say "Hello", "Hi" (friendly and informal) or "How do you do?" (more formal). " How do you do?" does not mean the same as "How are you ?", and is not really a question at all. It is just an expression that people use when they are introduced.
It is quite common to introduce people using their Christian name and surname (instead of Mr/Mrs, etc.+surname).You can't always do this, it depends on the people's age, social class, and social attitude, and on your relationship with them. If you are not sure, it is safer to use 'Mr /Mrs' etc
Useful    Expressions
You may introduce yourself like this:
Good morning, Mrs. Black, allow me to introduce myself. My name is Jane.
Let me introduce myself. My name is Mary Brown.
I don't believe we've met. I'm Li Zheng.
Glad to meet you. I'm Catharine Black.
It's Catharine, but please call me Kate.
Hi. I'm John. I'm a new comer.
You may introduce people like this:
May I introduce you to Mrs. White, my English teacher? Mrs. White, this is Mrs.Brown.
I'd like you to meet Jane.
This is Liu, the manager of our department.
Meet my friend Bai Mei.
Hi, John, this is Jane. Jane, this is John.
Common Answers:
Nice to meet you, Jane.
How do you do, Mrs. Brown?
Pleased to meet you.
Hello!
Glad to meet you.
It's nice to meet you.
It's a pleasure to know you.      Hi!
Useful Structures 1. Here's ... for ...
[structure] Here's/There's + n.+ for + pron.
Here's a phone call for you.                    Here's a flower for you.
2. You bet ...: to be able to be sure that
[structure] You bet + object clause
--- Are you going to the match?
--- You bet I am.
3. welcome: vi. to greet hospitably and with courtesy or cordiality
[structure] welcome (vi.)+ the adverbial modifier of place
Welcome! Come in and meet my parents.
Welcome home!
4. let me do sth.
[structure] let sb. + infinitive without "to"
Don't let your child play with matches.
My father has only just had his operation and they don't let us see him yet.
5. enjoy: v. to get pleasure from
[structure] enjoy + n./pron. / + doing sth.
1.If you enjoy something, you get pleasure and satisfaction from it.
2.If you experience pleasure and satisfaction on a particular occasion, you can say you enjoyed yourself.
3.You can say that someone enjoys doing something or enjoys being somethings.
I've enjoyed every minute of it.
Mr.Van Buren asked me if I had enjoyed myself.
The jar was always stacked with cookies that she had enjoyed baking.
They enjoyed being in a large group.
Useful Expressions
folks综合收益: sometimes used when talking to people in a friendly way     
Well, folks, what are you going to do today?
sort out: to select from others
sort sth. out: to select sth. from others ; (colloq.) tidy up
sort sb. out: (slang) to deal with or punish 惩罚
Sort out the smaller plants and throw them away.
This room needs sorting out.
I'll sort him out. Just let me get my hands on him.
包贝尔妈妈
address二宫和也椎名法子: n. the place where a person lives
Shall I give you my home address or business address?
    return address          home address            business address　
registered letter:  a letter sent by post with special precautions for its safety
It's a registered letter; sign here, please.
EMS（Express Mail Service）邮政快递服务
package: n. a parcel, a box etc. in which goods are packed
The postman brought me a large package.
谢霆锋照片
cf.    cupboard      closet      wardrobe
cupboard: n. a recess or piece of furniture with a door, in which things may be stored
Is there any food in the cupboard?
a skeleton in the cupboard: (idm) secret which would embarrass sb. if it is known
The news reported bribery of officials and other skeletons in the government's cupboard.
closet: n. cupboard or small room for storing things
怎么查自己的档案在哪wardrobe: n. place where clothes are stored
lavatory: n. a room with conveniences for washing and usually with one or more toilets
other expressions: WC, toilet, rest room, ladies' room, gentlemen's room, gents
Main Idea
Generally, young Americans do not live with their families. They often move away from home when they leave school. The more money they earn, the better houses they move to. Many old people live in old people's home. Some live in special towns built for old people.