我连一辆新自行车都买不起，更不用说汽车了。

I can't afford a new bicycle, ___let ___alone a car.

他连基本说明都没读过，更不用说高级手册了。

He hasn't even read the basic instructions, ___let ___alone the advanced manual.

这支队伍上个赛季连一场比赛都赢得很艰难，更不用说夺冠了。

The team struggled to win a single match last season, ___let ___alone the championship.