If I use the Guide (who charges CNY100), does he/she speaks English? Audio Guide is in English?

Is the Guide only to cover for the Central Axis? Or, that the charge of CNY100 is for certain number of hours?
If I use the Audio Guide, does it cover ALL the different Wings of the City as well?
from the exit Gate, Shenwumen, is it easy to take taxi to my hotel, Beijing Double Happiness Courtyard and what would be the approximate cost? Thank you.