英语翻译On average,American kids ages 3 to 12 spent 29 hours a w

英语翻译
On average,American kids ages 3 to 12 spent 29 hours a week in school,eight hours more than they did in 1981.They also did more household work and participated in more of such organized activities as soccer and ballet (芭蕾舞).Involvement in sport,in particular,rose almost 50% from 1981 to 1997:boys now spend an average of four hours a week playing sports; girls log half that time.All in all,however,children’s leisure time dropped from 40% of the day in 1981 to 25%.
“Children are affected by the same time crunch (危机) that affects their parents,” says Sandra Hofferth,who headed the recent study of children’s timetable.A chief reason,she says,is that more mothers are working outside the home.(Nevertheless,children in both double-income and “male breadwinner” households spent comparable amounts of time interacting with their parents,19 hours and 22 hours respectively.In contrast,children spent only 9 hours with their single mothers.)
All work and no play could make for some very messed-up kids.“Play is the most powerful way a child explores the world and learns about himself,” says T.Berry Brazelton,professor at Harvard Medical School.Unstructured play encourages independent thinking and allows the young to negotiate their relationships with their peers,but kids ages 3 to 12 spent only 12 hours a week engaged in it.
The children sampled spent a quarter of their rapidly decreasing “free time” watching television.But that,believe it or not,was one of the findings parents might regard as good news.If they’re spending less time in front of the TV set ,however,kids aren’t replacing it with reading.Despite efforts to get kids more interested in books,the children spent just over an hour a week reading.Let’s face it,who’s got the time?

平均而言,美国的孩子3岁至12花29小时,每周在学校,八个小时以上,他们在1981年做到了.他们也做了更多的家务劳动,并在诸如足球和芭蕾（芭蕾舞）等举办的活动更参加了会议.参与体育运动,特别是从1981年上涨近50％,到1997年：男孩现在花四个小时,平均每周参加体育活动;女生日志一半的时间.总而言之,但是,儿童的休闲时间的40下降到1981年的一天％至25％.
“儿童是由同一时间危机（危机）的影响,影响他们的父母说：”桑德拉Hofferth,谁负责对儿童的时间表,最近的一项研究.一个主要原因,她说,是有更多的母亲外出工作.（不过,在这两个双薪和“男子养家”家庭的孩子一起度过他们的父母,19小时和22小时的时间可比金额分别相互作用.相反,他们的孩子一起度过的单身母亲,只有9个小时.）
只工作,不玩耍,可以作出一些非常混乱,孩子.“玩是孩子最有力的途径探索世界和认识自己,”T.贝里布拉策尔顿说,在哈佛医学院教授.非结构化发挥鼓励独立思考,让年轻的谈判与同行的关系,但孩子3岁到12只花了12小时,从事IT一个星期.
孩子们度过了他们采样迅速减少“自由时间”看电视的四分之一.但是,这,相信与否,是父母的结果可能把一个好消息之一.如果他们花费在电视机前的时间更少,但是,孩子不读它取代.尽管努力让孩子们更感兴趣的书,孩子们只花了一个多小时,一周的阅读.让我们面对它,谁拥有的时间?