Please check out the following sentences.
(1) He got dead drunk, so he mistook the plice car for a taxi.
(2) He was unknowingly got into the squad car and was taken to the police station.
I try to revise the sentences as written. Are they acceptable?
(1) He got dead drunk, and mistook the police car for a taxi.
(2) Unknowingly, he was put into the squad car and was taqken to the police station.
The first is right. You've made the drunk the grammatical subject of the second, but 'unknowingly' still doesn't work - so when I said 'subject' I should have used the trendy new word 'actor'. Maybe: 'He didn't even realize he was being put into a squad car...'..?
What about omitting "was" from the original version of the second sentence?
He unknowingly got into the squad car. (Remember, he thought it was a taxi. He knew he got into a car, but he didn't know he got into a police car.)
(Why would he be taken to the station for being drunk? He tried to get into a taxi, not his own car to drive that away.)
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.