The English language has a lot of words which can be used in many different ways and in many different expressions.

    One such example is the word matter. In fact, matter can mean just about anything. It could be one of the most useful words in the English language.

    Let's get to the heart of the matter —a matter of principle(原则).

    If someone says that you owe(欠) him $50, but you don't, a friend might say, “Well, you could pay him the $50. It's not that much money. Then you won't have to hear him say it anymore. But if you do not owe him the money, do not pay him the money. It's a matter of principle.

    There is another way to use the word matter. But be careful with your choice of words.

    If you ask someone, “What's the matter?”, it shows you are worried about the other person. But saying, “What's the matter with you?” has a completely different meaning. And it usually sounds rude (粗鲁的). In fact, when you say, “What's the matter with you?” you are suggesting that the person did something wrong or stupid.

    Another expression that could sound rude is to say, “It doesn't matter to me.” Here, it depends on the context, and how you say it.

    Let's say you tell someone that a friend just got a big raise at work. That person answers with, “It doesn't matter to me.” Here, it means he or she does not care. And it sounds rude.

    But saying, “Oh, you pick where we eat dinner. It doesn't matter to me.” does not sound rude. In this situation, “it doesn't matter” shows you are easy-going(随和的).

    No matter how you look at it and what you say, matter is a very useful word. And it's only a matter of time before you will become an expert on the use of matter.

    The Speaker was the title of an eight-part television series. It was produced by the BBC in the UK. The aim of the series was to find Britain's best young speaker.

    Young people between the ages of 14 and 18 from across the country were invited to take part in The Speaker. Applicants included tough-talking teens, jokers, and shy, sensitive types. The one thing they had in common was a desire(渴望) to talk publicly and enthusiastically about what was important to them.

    Each applicant was asked to prepare and film a one-minute speech on any subject-from pop music to politics, from hooligans(小流氓) to homework. From all the entries received, 160 speakers were chosen by three judges. These speakers were invited to the next stage of regional auditions(海选), where they had to deliver their one-minute speech again, but this time in front of the judging panel(评审团) and an audience. Of the 160 speakers, only 20 were selected by the judges to go through to the next stage. They then had to give another speech on a subject they were given only seconds before making the speech. Some competitors also had to speak about a picture, again without any preparation.

    The final eight were then coached by celebrity mentors(指导老师) and given new challenges to help improve their speaking skills. Their speeches were judged by the judges and their mentor. By the last part in the series, which was shown at the end of April 2009, only three competitors remained. They were taken on a research trip to Malawi, where they found out first hand the effects of children's rights, ahead of their final speech. Duncan Harrison, a 14-year-old schoolboy from Bristol was chosen as the winner by the judges and mentors.

    When asked what makes a good speaker, the actor, director and teacher, Jeremy Stockwell, who was one of the judges on the series, said, “An effective speaker must know and trust who they are, what they have to say, and why they have to say u. Whether you're playing Hamlet, delivering a political message or presenting a school meeting, you must have a story to tell, a message to pass on and a clear sense of purpose.”

    Christopher Thomas, 27, was a writer by night and a teacher by day when he noticed he was always tired and was losing weight fast. Diagnosed with diabetes (糖尿病), Thomas would need to inject himself with insulin (胰岛素) three times a day for the rest of his life or risk nerve damage, blindness, and even death. And if that weren't bad enough, he had no health insurance.

    After a month of feeling upset, Thomas decided he'd better find a way to fight back. He left Canton, Michigan for New York, got a job waiting tables, nicknamed himself the Diabetic Rockstar, and created diabeticrockstar.com, a free online community for diabetics and their loved ones—a place where over 1,100 people share personal stories, information, and resources.

    Jason Swencki's son, Kody, was diagnosed with type diabetes at six. Father and son visit the online children's forums (论坛) together most evenings. “Kody gets so excited, writing to kids from all over,” says Swencki, one of the site's volunteers. “They know what he's going through, so he doesn't feel alone.”

    Kody is anything but alone: Diabetes is now the seventh leading cause of death in the United States, with 24 million diagnosed cases. And more people are being diagnosed at younger ages.

    These days, Thomas's main focus is his charity (慈善机构), Fight It, which provides medicines and supplies to people—225 to date—who can't afford a diabetic's huge expen­ses. Fight－it.org has raised about $23,000—in products and in cash. In May, Thomas will hold the first annual Diabetic Rockstar Festival in the Caribbean.

    Even with a staff of 22 volunteers, Thomas often devotes up to 50 hours a week to his cause, while still doing his full­time job waiting tables. “Of the diabetes charities out there, most are putting money into finding a cure，” says Bentley Gubar, one of Rockstar's original members. “But Christopher is the only person I know saying people need help now.”

    The meaning of silence varies among cultural groups. Silences may be thoughtful, or they may be empty when a person has nothing to say. A silence in a conversation may also show stubbornness, uneasiness, or worry. Silence may be viewed by some cultural groups as extremely uncomfortable; therefore attempts may be made to fill every gap (间隙) with conversation. Persons in other cultural groups value silence and view it as necessary for understanding a person's needs.

    Many Native Americans value silence and feel it is a basic part of communicating among people, just as some traditional Chinese and Thai persons do. Therefore, when a person from one of these cultures is speaking and suddenly stops, what maybe implied (暗示) is that the person wants the listener to consider what has been said before continuing. In these cultures, silence is a call for reflection.

    Other cultures may use silence in other ways, particularly when dealing with conflicts (冲突) among people or in relationships of people with different amounts of power. For example, Russian, French, and Spanish persons may use silence to show agreement between parties about the topic under discussion. However, Mexicans may use silence when instructions arc given by a person in authority rather than be rude to that person by arguing with him or her. In still another use, persons in Asian cultures may view silence as a sign of respect, particularly to an elder or a person in authority.

    Nurses and other care-givers need to be aware of the possible meanings of silence when they come across the personal anxiety their patients may be experiencing. Nurses should recognize their own personal and cultural construction of silence so that a patient's silence is not interrupted too early or allowed to go on unnecessarily. A nurse who understands the healing (治愈) value of silence can use this understanding to help in the care of patients from their own and from other cultures.

    "Acting is the least mysterious of all crafts," Marion Brando once said. But for scientists, working out what is going on in an actor's head has always been something of a puzzle.

    Now, researchers have said actors show different patterns of brain activity depending on whether they are in character or not.

    Dr Steven Brown, from McMaster University in Canada, said, "It looks like when you are acting, you are suppressing (压制) yourself; almost like the character is possessing you."

    Brown and colleagues report how 15 actors, mainly theatre students, were trained to take on a Shakespeare role — either Romeo or Juliet — in a theatre workshop. They were then invited into the laboratory, where their brains were scanned in a series of experiments.

    Once inside the MRI scanner, the actors were asked to answer a number of questions, such as: would they go to the party? And would they tell their parents that they had fallen in love?

    Each actor was asked to respond to different questions, based on two different premises (前提). In one, they were asked for their own perspective, while in the other, they were asked to respond as though they were either Romeo or Juliet.

    The results revealed that the brain activity differed depending on the situation being tested. The team found that when the actors were in character, they use some third-person knowledge or inferences about their character.

    The team said they also found additional reduction in activity in two regions of the prefrontal cortex (前额皮质) linked to the sense of self, compared with when the actors were responding as themselves.

    However, Philip Davis, a professor at the University of Liverpool, was unimpressed by the research, saying acting is about far more than "pretending" to be someone — it involves embodying (体现) the text and language.

    Before uploading a photo of ourselves to social media, chances are that we'll use an app to smooth our skin, make our eyes look bigger, and lips fuller. With a couple of taps on our mobile phone, we can get a quick fix and present the "best" version of ourselves to the world. However, the problem is, when we simply edit our imperfections away, we're also changing the way we look at ourselves.

    Last month, researchers published the article Selfies – Living in the Era of Filtered(过滤的) Photographs. The article analyzed photo editing apps' bad influences on people's self-respect and their possibility to cause appearance anxieties. The researchers also warned that such apps make it difficult to tell the difference between reality and fantasy. "These apps allow one to change his or her appearance in minutes and follow an unrealistic standard of beauty," the article reads.

    In the past, people may have compared their looks to those of famous persons. But for today's young people, beauty standards are most likely set by what they see on social media. "From birth, they are born into an age of social platforms where their feelings of self-worth can be based purely on the number of likes and followers that they have, which is linked to how good they look." British cosmetic doctor Tijion Esho told The Independent. This is why many young people suffer an identity trouble when it comes to appearance.

    "Now you've got this daily comparison of your real self to this fake self that you present on social media." Renee Engeln, a professor of psychology, told the HuffPost website. Engeln further pointed out that when people spend too much time making such comparisons, they may become "beauty sick" and find it difficult to accept what they actually look like. "Because between you and the world is a mirror, it's a mirror that travels with you everywhere. You can't seem to put it down." she told The Washington Post. So when we look in a real mirror, we shouldn't think to ourselves, "Do I look as good as myself in the filtered photos?" Instead, we should think, "I feel good; I have my health."