嘿嘿,又见到你啦! 1 请走在马路内侧 Please walk on the inside lane of the road Please walk in the inside lane of the road 我比较喜欢第二句 2 请靠马路右侧 走路 / 骑车 (自行车) Please walk on the right side of the road Please bike on the right side of the road (bike 做动词) 或 Please ride your bike on the right side of the road 3 不要长时间走在马路中间 Do not stay or walk in the middle of the road for too long 我觉得 for too long 在这句子里是冗余的,可以省略. 4 请把自行车扶起来 Please pick the bike up. 5 请把刚才滑到的老人扶起来 Please help up the elderly gentleman who just fell. Please help the elderly gentleman,who just tripped,get up. 第一句比较简洁.