reduce (by) half.Taking out these smoking scenes could reduce the_英语解答

reduce (by) half.
Taking out these smoking scenes could reduce the number of teen smokers (by) half.
为什么不能用to

人气：377 ℃　时间：2020-06-13 01:30:18

解答

by half意思是“一半”,而且一般指“减少一半”,本句话的意思就是“把那些吸烟（有害健康）的场景摆出来能让青少年吸烟人数减少一半”.
没有to half用法