GbEng
我已写一封抱怨信给国家铁路部门，总得有人要支持提高服务标准。 I've written a letter of complaint to State Rail; somebody has got to carry the banner for better standards of service.
我总得想个办法完成任务。 I must fulfil my task by some means or other.
千万不要照牌价购买汽车, 总得讲讲价才是. Never pay the advertised price for a car; always try to bargain.
我得对他们说他们被开除了, 我总得替老板（出面）做这种倒霉事儿. I had to tell them they'd lost their jobs: I always have to do the boss's dirty work (for him).