[Grammar] He wouldn't have known what it means then.

[MeyaN]

Is the below one correct to use in spoken english:
He wouldn't have known what it means then.
or should we use 'meant' only.

 

[MeyaN]

Thank you. And it should be 'meant' in written English. Right?

 

[MeyaN]

Doesn't 'wouldn't have' refer to the past only? How would keeping 'then' at the end matter?
(If I removed the article 'the' before 'past' in the above sentence, would it be wrong? Why? I put it instinctively without any reason)
Also please answer my post titled 'Mixed Doubts' as well.

 

[Matthew Wai]

I think 'what it means', the simple present, could refer to the past, the present, and the future.

 

[Matthew Wai]

I think it is possible to say 'I didn't know what this word means, but I do now'.

the below one

The one below.

 

[MeyaN]

I'm sorry if it sounded like a demand. It's my bad not to add please to make it clear that's a request. Some don't like please, sir and the like. Otherwise, I'm inclined to make the answerer sure that its a request. Excuse me this time.