2. One day when i was little, i told (past simple) my parents a lie...
3. Can you tell (present simple) me (when we use `tell` we talk to someone, so we need `me` here) the difference between an ...?
4. ... She really told (past simple) me off.
5. ... but I don't think he's told (has told - present perfect) the truth.
6. I'm going to tell (infitive because of the construction `to be going to do smth`) you a secret ...
The text that is written in this style is just an explanation. You shouldn't write it.