Corrected entry: In the scene where Sentinel Prime resurrects and attacks Optimus, Optimus comforts him in English. From what I remember from the first part, the Autobots say "We've learned Earth's languages through the World Wide Web". But how come Sentinel responds to and speaks in English immediately after he's waken from NDE? He crashed before Megatron himself crashed on Earth 10,000 years ago, so there would have been no way Sentinel could have learned English anyway, since it didn't exist at that time. (00:50:00)
Earthling
22nd Oct 2011
Correction: Actually when the Matrix was put into his chest, he retained the wisdom of the prime including Optimus'. Therefore he too now can speak English.