French language Q&A Forum

I came across this recently and had difficulty finding a definitive answer. Examples of usage would be helpful. I read that 'to teach someone' one needs either a noun or pronoun acting as an Indirect object. If you could kindly provide some pointers it would be great.

Why use Mangez-y ! then Manges-y !?

I don't see when they implied the use of Vous or Tu in the sentences? Please explain. Thanks

Bonjour ! 

I have been told by French people that I cannot apply this rule to the verb commencer à. 

For example: 

Je commence à faire mes devoirs. J'y commence. 

I am starting to do my homework. I'm starting it. 

Is it an exception ? Or is it just socially not regularly used ? 

Merci ! 

Hello ,

How do you say: "I took and my passed my exams"