No student of a foreign language needs to be told that grammar is complex. By changing the order of the words and by adding a range of auxiliary verbs (助动词) and suffixes (后缀), we can turn a statement into a question, state whether an action has taken place or is soon to take place, and perform many other word tricks to convey different meanings. However, the question which many language experts can't understand and explain is—who created grammar?

    Some recent languages evolved due to the Atlantic slave trade. Since the slaves didn't know each other's languages, they developed a make-shift language called a pidgin. Pidgins are strings of words copied from the language of the landowners. They have little in the way of grammar, and speakers need to use too many words to make their meaning understood. Interestingly, however, all it takes for a pidgin to become a complex language is for a group of children to be exposed to it at the time when they learn their mother tongue. Slave children didn't simply copy the strings of words used by their elders. They adapted their words to create an expressive language. In this way complex grammar systems which come from pidgins were invented.

    Further evidence can be seen in studying sign languages for the deaf. Sign languages are not simply a group of gestures; they use the same grammatical machinery that is found in spoken languages. The creation of one such language was documented quite recently in Nicaragua. Previously, although deaf children were taught speech and lip reading in the classrooms, in the playgrounds they began to invent their own sign system, using the gestures they used at home. It was basically a pidgin and there was no consistent grammar. However, a new system was born when children who joined the school later developed a quite different sign language. It was based on the signs of the older children, but it was shorter and easier to understand, and it had a large range of special use of grammar to clarify the meaning. What's more, they all used the signs in the same way. So the original pidgin was greatly improved.

    Most experts believe that many of the languages were pidgins at first. They were initially used in different groups of people without standardization and gradually evolved into a widely accepted system. The English past tense—“ed” ending— may have evolved from the verb “do”. “It ended” may once have been “It end-did”. It seems that children have grammatical machinery in their brains. Their minds can serve to create logical and complex structures, even when there is no grammar present for them to copy.

    About one in ten video game players shows signs of addictive behavior that could have negative effects on their family, friends and school work, according to a new study conducted in New York.

    Researchers at Iowa State University(ISU) and the National Institute on Media and the Family found that some gamers show at least six symptoms of gambling addiction such as lying to family and friends about how much they play games, using the games to escape their problems and becoming restless when they stop playing.

    They may also skip homework to play video games or spend too much time playing games and do poorly in school. "While the medical community currently does not recognize video game addiction as mental disorder, hopefully this study will be one of many that allow us to have an educated conversation on the positive and negative effects of video games," said Dr. Douglas Gentile, an assistant professor of psychology at ISU.

    Dr. David Walsh, the president of the National Institute on Media and the Family which tries to reduce the harm of media on the health and development of children and families, said the findings are a wake-up call." This study gives everyone a better idea of the problem," he explained.

    The researchers, who studied 1,178 American children and teenagers, aged 8 to 18, found some displayed at least 6 of 11 symptoms of pathological (病态的) gambling as stated by the American Psychiatric Association. Addicted gamers played video games 24 hours a week, twice as much as casual gamers. Some addicted gamers even steal to support their habit, according to the findings that will be published in the journal Psychological Science.

    While video games can be fun and entertaining, some kids are getting trouble. "I continue to hear from families who are concerned about their kids' gaming habits. Not only do we need to focus on identifying the problem, but we need to find ways to help families prevent and treat gaming addiction.

    Hip-hop dancing(街舞) is popular with many young people today. They like it because they can invent their own moves. They use this dance to show their love for life. It also shows that they are not afraid of problems.

    Hip-hop dancing has a history of more than 20 years. It first began in the 1980s in the US. In early times, it was seen in New York and Los Angeles. At that time, many young black people often danced to the music in the streets. They used their legs, arms, heads and even shoulders to dance. Many young people still use most of these moves today.

    Hip-hop dancing became popular all over the world because of the 1983 movie Flash dance. Some people performed Hip-hop dancing in the movie. People enjoyed their performance. They began to dance like them. Then it became popular. There are two kinds of Hip-hop dancing: new school and old school. More and more young people are learning Hip-hop dancing. People believe that it is a good way to exercise their bodies, and that it is good for their health.

    I'm a real book lover. Every time my friends visit me, my nose is buried in a book. Wherever I go, I always have a book with me. Novels, history books, stories about people, journals and news­I read them all and I've learnt a lot, too. For example, many things in life happen for the best even if we don't like or understand them.

    Why is reading such an enjoyable pastime for me? I probably first learned about it from my parents. My mother read to me at night in my childhood and bought me picture books. The greatest gift she has given me is a love for reading. And it will be a life-long habit.

    No one ever asked me why I liked to read. They just saw me and asked, "Oh? Is that for school work?" And I just shook my head, "No. It's just for fun." While reading a good book, I can totally forget myself and fly to another world. It's like exploring through someone's eyes, which is just as exciting as watching a movie.

    Reading is also necessary in order to learn about writing, to improve my use of words and phrases and broaden my knowledge. What a pity to see our imagination disappear, for we don't exercise it often. Reading can even be good for one's health, I think. Everyone should read sad stories that make us cry and also books with humor that make us laugh out loud!

    Cooking programs and classes for children seem to positively influence children's food preferences and behaviors, according to a recent review. And, although the review didn't look at long-term effects of such programs, the findings suggest that such programs might help children develop long-lasting healthy habits.

    This research comes at a time when childhood obesity(肥胖) rates have been rising rapidly. More than one-third of adolescents in the United States were obese in 2012, according to the U. S.Centers for Disease Control and Prevention (CDC). This trend has been caused, at least in part, by a significant decrease in the amount of meals that people consume at home since the 1980s, according to background information in the study.

    Cooking education programs, such as Food Explorers, teach children about new healthy foods and how to prepare them. They also stress the importance of eating five fruits and vegetables every day. A volunteer parent explains a new food to the group, and the kids make something based on the lesson, such as fruit or vegetable salad. Depending on the program, kids may be sent home with information about healthy foods to bring to their parents, the review explained.

    The study team reviewed eight other studies that tested different types of cooking education programs. Children in these classes were between 5 and 12 years old, according to the review. The goal of the study team was to learn more about developing an efficient program to encourage healthy food choices that last a lifetime. The study found that it is particularly important to expose kids to healthy foods on a number of occasions. This makes them feel comfortable with the new foods, which helps them build healthy habits.

    The study stressed the importance of getting parents involved in(参与) their children's eating habits. Parents who are unable to enroll their kids in a cooking class can achieve similar benefits by having their kids help them while they prepare meals at home. Children are more comfortable at home, which makes them more receptive to new foods because they will make the connection to a positive experience.

I believe in the power of science fiction,not just for its capacity to transform dreams into reality, but also for its power to bond together those who share a common vision of the future. For me, that's true for my relationship with my dad. Some fathers and sons bond over sports, fishing or hunting, but my dad and I bond over Star Trek. We tried a trip to Disney World, but one of my earliest memories wasn't Mickey, but a Klingon battle cruiser（巡洋舰）on the screen.
Over the years, nearly every setting and situation has become far away for my dad and me. When it's warm at night, we're not driving along some dark streets in Indiana,but.going at a slow speed with stars dimly shining. Both of us are thinking of them,without needing to say a word. All these visions of other universes have together created a private universe for my dad and me.

Gene Roddenberry, creator of Star Trek,once said, "Science fiction is a way of thinking，a way of logic that bypasses（绕过）a lot of nonsense. It allows people to look directly at important subjects." A lifetime of science fiction has influenced more than just my relationship with my dad, but has also helped me shape my own hopes for the future.I'm now a science writer.

Yes,science fiction has made me into a nerd. And it also has been a source of joy for my family,making me an optimist while enabling me to think critically about the danger of technology.thank those authors who have shared their visions, the world and my family are better for it. Thank my dad, who is both the best storyteller and the best man i have ever known because he helped me realize the truth of Tennyson's words," since i dipped into the future,i saw the vision of the world,and all the wonders that would be.