To be an example what does "of + gerund" mean in the following sentences?
I'm tired of doing that.
I'm sick of being late.
As far as I understand these sentences mean "due to" or "because of". So, is "of + gerund" appropriate for every "because of something" situation? For example I want to mean "I'm asking how to get to there because I don't know the bus way". Can I rephrase this sentence as "I'm asking the bus way of not knowing the bus way."