给你几个可选一个：
Lucy has no wrist watch,but she has a clock.
Lucy hasn't a wrist watch,but she has a clock.
Lucy hasn't got any wrist watch,but she has got a clock.
While/Although Lucy has no wrist watch,she has a clock.
Lucy has no wrist watch,she has a clock instead.
Lucy has a clock instead of a wrist watch.
如需要,还可有好多种说法.