Verb Tenses

What's the verb tense?

Bob is only four years old, but he goes to shool everyday.
Bob has already learned to speak English quite well.
I'll never tell a lie again.
When they were young, they used to live on a big farm.
Will you give me a ride home?
By the time I got home, he had already eaten dinner.
He was having a shower when the accident happened.
All of a sudden, she noticed that a man had been following her for several blocks.
I have been working on this project for ten days.
Mary is thinking about going to Greece.