"Everything humans know of our planet we were told had been shared. ... You lied to us. You've made a grave mistake." (said as the Autobots are rolling into the military base, and as Optimus approaches the government/military woman)

"You may lose your faith in us, but never in yourselves. From here, the fight will be your own." (voiceover of various shots, and when Optimus is speaking to Sam in front of that currently unknown spacecraft)

 

The shuttle Discovery attached to a CGI craft with two booster rockets attached.

 

And what does Optimus mean by this? I'm a bit confused. My questions found in brackets

Everything humans know of our planet (does he mean Cybertron or Earth?) we (he means autobots, eh?) were told (supposdly by humans?)
had been shared (with whom?!).

Excuse me if my questions are stupid, but really I didn't get what he wants from this sentence !!
Sorry again, cheers.

 

i think hes saying he thought the humans had told the autobots everything they knew about transformers/cyberton, and if they lied they made a "grave mistake"

 

You've more or less got the gist of it, but I'll elaborate. (It is a somewhat confusing statement.)

"Everything humans know of our planet we were told had been shared."
=
"Everything humans know (regarding things like The Cube in the Hoover Dam, Cybertronian symbols all over the world, etc.) of our planet ("our planet" = Cybertron) we ("we" = the Autobots) were told had been shared (most likely by high ranking government officials like Banachek and Galloway)."
=
"Hey, you government officials told us Autobots everything you knew about Cybertron/Transformers. But you lied. You still kept secrets from us. That's bad!" (regarding the ship on the moon, the Space Race, etc.)

The Autobots were under the impression that any knowledge that humans had pertaining to the Transformers or Cybertron had been shared with them (the Autobots), even though it hadn't. Optimus is basically accusing them of lying to the Autobots. Withholding information.

Pretty much.

 

Alright, thanks a lot TylerMirage.
The sentence which has made the confusion for me is "we were told had been shared".
If the autobots were told the information, why he says "been shared"?? If he's just repeating to confirm the meaning, then why he uses the past perfect tense ?!

I'll just skip this grammar thing, and understand the sentence as you've said, because this is the only meaning.

PS: English isn't my native language =)

 

You have just made my day. Thank you so much