Mary is 12 years old.Two years ago,she was twice as old as her brother Jack.How old is Jack now? 我读不太懂这是什么意思,希望英语能手能帮帮我回答这个问题... 我读不太懂这是什么意思,希望英语能手能帮帮我回答这个问题 展开 1个回答 #热议# 空调使用不当可能引发哪些疾病? 装shikupud26ab0 2014-06-28 知道答主 回答量:0 采纳率:0% 帮助的人:0 我也去答题访问个人页 关注 展开全部 句子意思:玛丽12岁,2年前,他的年龄是他的兄弟杰克的2倍大,杰克现在多大了? 玛丽今年12岁,两年前10岁,10是5的二倍,杰克两年前5岁,今年杰克7岁 How old will Mary be when Jack is twice his present age? present age意思:现在的年龄句子意思:当杰克是他现在年龄的二倍的时候玛丽多少岁? 玛丽现在12岁,杰克现在7岁,相差5岁。杰克年龄是现在二倍时(7X2=14)杰克14岁,则玛丽岁数为14+5=19岁 本回答由提问者推荐 已赞过 已踩过< 你对这个回答的评价是? 评论 收起 推荐律师服务: 若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询 ?> 其他类似问题 2007-04-24 mary is 12 years old .two years ago ,she was twice as old as her brother jack.how old is jack now? 39 2012-02-20 Mary is 12 years old. Two years ago,she was twice as old as her brother Jeck.How old is Jeck now? 13 2010-02-09 Mary is 12 years old. two years ago, she was twice as old as her brother jac 6 2012-05-29 Mary is 12 years old .two years ago she was twice her brother john's age .how old 2 2012-01-05 Mary is 12 years ago she was twice as his brother,John.How old was Mary when John was born? 1 2011-04-08 mary is12 years old .she was twice as old as his brother, ,john how old was mary when john was born 5 2007-04-28 Mary is 12 years old.Two years ago, shewas twice as old as her brothei jack,How old is jack now?" 8 2011-10-31 Mary is seven years old now .This autumn she S—— her school. 3 为你推荐: