[Grammar] It has now been 16 years since I've seen the places

[NAL123]

1) It has now been 16 years since I've seen the places where I grew up in Michigan.
2) She's never invited me over to her house since she's lived here.
3) She's never invited me over to her house since she lived here.

My questions:

a) Does 1 mean: the last time I saw the places was 16 years ago?
b) What's the difference between 2 and 3?

 

[GoesStation]

The answer to question A is yes.

Please ask only one question per thread. You're welcome to post your other question in a new thread.

I made the same request in this recent thread of yours. Please acknowledge that you've read both requests — and abide by them.

 

[tedmc]

1) It has now been 16 years since I'[STRIKE]ve seen[/STRIKE] saw the places where I grew up in Michigan.

Since is followed by a point in time in the past (past tense).

 

[NAL123]

1) It has now been 16 years since I'[STRIKE]ve seen[/STRIKE] saw the places where I grew up in Michigan.

Since is followed by a point in time in the past (past tense).

But https://dictionary.cambridge.org/grammar/british-grammar/since says both "saw" and "have seen" are possible after since.

I made the same request in this recent thread of yours. Please acknowledge that you've read both requests — and abide by them.

Yes, I've read them both and will abide by them.

I think in the same link above, I've found the answer to my second question.

"When since introduces a state in the past that is still continuing in the present, we use a present perfect form of the verb after since and a present perfect form of the verb in the main clause:

Since I’ve been back at work, I’ve been feeling great."