介绍:
Day31
1百分之多少的学生一点也不锻炼？
What percent of the students do not exercise at all?
2简是一名十六岁的美国高中生。
Jane is a 16-year-old high school student in the United States.
3《美国青少年杂志》就她的习惯询问了她。
American Teenager magazine asked her about her habits.
4她通常每天看电视超过两个小时。
She usually watches TV for more than two hours a day.
要点：
①not---at all根本不
②a 16-year-old 16岁的，名词前叫前置定语
③介词for接时间段
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