How to make alias trailing with space hack works with parameter supplied

I have two aliases watchExpand and l. I know that you can make bash expansion work with aliases by placing a trailing space like so: alias watchExpand='watch ' l is aliased to ls -larthiF --context. So when I type the command watchExpand l it works like a charm. However if I supply a parameter to watchExpand command, e.g. watchExpand -n 1 l My l alias no longer works. How can I get bash expansion after arguments?