How come we can say "Since I've know Jane...

[forum_mail]

How come we can say "Since I've know Jane she has been in love with Jack" and we can't say "Jack has been here since I've come" ?!

thanks, best wishes!

[mykwyner]

I've means "I have." This is the perfect tense and requires the (usually) n-ending form of the verb:

"Since I've known Jane..."

Come is an irregular verb, it does not change in the perfect tense.

Your sentence: "...since I've come." is correct English.

The government has come to help you, I've come to help, also.

[Coffa]

I think the point is not the error in the past participle of 'know', but the usage of present perfect and imperfect tenses.

In the first example, 'Since I have known Jane', we use the present perfect tense because I knew Jane in the past, and I still know her now when I am reporting. But in the second example, I 'came' once in the past - I am not still 'coming' - so the correct sentence is "Jack has been here since I came."

[rincui]

is it after "since" we always use simple past tense ??

how about:

"Since I came into the school, I've loved it" ?

(is it correct that we put a comma after the "since" clause like thw above example ? )

[Nikole]

What did you want to say By school? If you are a pupil you should say Since I went to school... but if you mean building you must say Since I went to the school(or came) But according to the context a pupil is implied. You needn't place a comma.

[forum_mail]

I think the point is not the error in the past participle of 'know', but the usage of present perfect and imperfect tenses.
In the first example, 'Since I have known Jane', we use the present perfect tense because I knew Jane in the past, and I still know her now when I am reporting. But in the second example, I 'came' once in the past - I am not still 'coming' - so the correct sentence is "Jack has been here since I came."

Coffa, you're right... It was just a typo. Coming back to the main problem - I thought that if I'm saying "Jack has been here since I HAVE COME" then I imply that I'm still there! ... hmm... am I mistaken?

and tell me please - do we say

a) I thought that if I'm saying "bla bla bla..."
b) I thought that if I say "bla bla bla..."

and what's the difference and why?