■【汉译英】半个小时过去了,脚步声传来,大家都明白—老板来晚了.

Half an hour had passed. There came the steps. Everyone then knew that the boss came late.

After half an hour, the sound of steps is heard by us. Everyone knows that the boss is late.

这样翻译要好些：
Half an hour passed,there came sound of footsteps,which told eveybody clearly,the boss arrived late.

Half an hour later,the step is coming,everybody know that the boss is late.