On someone's birthday 正确 I want to look at your new MP4 player.是对的。Can I have a look后不接东西。 I plan to be a doctor when I grow up 正确。plan to do I plan will be a doctor when I grow up 错plan已经有将来时意味,没必要用will。 in morning saturday. 不成立 具体时间前介词用on,时间没有就近原则。 年、月、年月前用in 年月日、月日、某日(某月)下午(上午、中午……)前用on 整点前用at 如:at 8:00...