1.Mr Black goes to work by underground.(换种说法,但意思不变)
问题描述：
1.Mr Black goes to work by underground.(换种说法,但意思不变)
答
Mr Black takes underground to work.不用在takes后面加an么？？？？？？应该不用吧，我觉得地铁应该不可数吧。哦！