know - knew - have known

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hi,

I know her since I was young.
vs.
I knew her since I was young.
vs.
I have known her since I was young.

I can’t seem to differentiate the meaning of these sentences, please help.

RR.

2

Hi RR
‘I have known her since I was young’ is the only correct sentence out of the three,

I know her - present tense - I know her now.
I knew her - past tense - I knew her then.
If you knew her in the past and still know her now (as is the case with ‘since I was…’) then you need a progressive tense:

I have known her since…

3

Hello Bev,

Can we say something along these lines:

When he saw her it occured to him that he had known her since he was young

Thanks!

4

Yes - that still uses ‘have/had known’ in the appropriate place.
Even though there are mixed tenses within the sentence, it’s fine.

5

thanks!