23Ahmed正要赢这个比赛，但是后来他的兄弟开始追上他。

正将要、马上要赢这个比赛，即将要赢这个比赛 be winning

be doing 即将要，马上要，下一个时间点就发生的事情

be 来表示整句话所在的语境

be doing = be about to do sth. 

be going to do 没有突出即将马上的意思，但是也是将来时态

will be doing  将来正在发生的动作，强调的是正在发生的动作。

比赛

match game race competition

race 田径类 比赛速度

competiton 更加广泛

Ahmed 马上要赢这个比赛了但是他的兄弟开始赶上了他。

句子正确意思：Ahmed正要赢这个比赛，但是后来他的兄弟开始追上他。

Ahmed is winning the race but his brother starts to catch him up.

自己把时态听错了

Ahmed was winning the race but then his brother started to catch him up.

catch him up 

catch sb. up

catch up with sb.

Ahmed was winning the race but then his brother started to catch+him+up.

catch him up 

the 轻读

started