这场比赛我们务必获胜。 We desperately need a result from this match.
因我们订购的是季节性商品，贵方务必于十月前装运，不然我们就赶不上季节了。 Be sure to ship the goods before October as what we ordered is seasonal goods. Otherwise we will not be able to catch the season.
务必把这些东西放对地方。 Be sure to place them correctly.
自行车务必上锁。 Be sure to lock your bicycle.
务必在六点之前把工作完成。 Be sure to get the work finished before six o'clock.