English tense

"If anyone knows a good grammar website for foreigners i would highly appreciate."

If anyone knows a good grammar website for foreigners,(COMMA) I would BE GREATLY APPRECIATIVE.
1. I am so desperate i wish i (not move) ______ to this place.

The verb 'to wish' can be used in a variety of different ways:
Wishes about the present and future
1. We use wish + Simple Past Tense to express that we want a situation in the present (or future) to be different.
• I wish I spoke Italian. (I don't speak Italian.)
• I wish I had a big car. (I don't have a big car.)
• I wish I was on a beach. (I'm in the office.)

Future:
I wish it was the weekend tomorrow. (It's only Thursday tomorrow.)

2. We use wish + Past Continuous Tense to express that we want to be doing a different action in the present (or future).
• I wish I was lying on a beach now. (I'm sitting in the office.)
• I wish it wasn't raining. (It is raining.)
• I wish you weren't leaving tomorrow. (You are leaving tomorrow.)

Wishes about the past
1. We use wish + Past Perfect to express a regret, or that we want a situation in the past to be different.
• I wish I hadn't eaten so much. (I ate a lot.)
• I wish they'd come on holiday with us. (They didn't come on holiday with us.)
• I wish I had studied harder at school. (I was lazy at school.)

Wish + would
1. We use wish + would + bare infinitive to express impatience, annoyance or dissatisfaction with a present action.
• I wish you would stop smoking. (You are smoking at the moment and it is annoying me.)
• I wish it would stop raining. (I'm impatient because it is raining and I want to go outside.)
• I wish she'd be quiet. (I am annoyed because she is speaking.)

In (1), the sentence is talking about a regret that we have for something done in the past. So, we use 'wish + Past Perfect' :
"I am so desperate, I wish I HADN'T MOVED to this place."

re (2) : the use of 'were' places their concern in the past. So:
"As far as Mr and Mrs Brown were concerned,COMMA) the hotel should HAVE BEEN CLOSED until adequate staff WERE EMPLOYED."
('staff' regarded as individual employees, and so the plural verb.)

wow, thank you! that's a very detailed answer,

btw,are you a teacher of English?

I've been tutoring in English to non-native speakers for about 12 years. I became interested in doing that, because I love the English language.
So I have many files that I have compiled over the years that I draw on to answer the questions I often get asked.

After the use of 'I wish...", the next one is usually, "I hope…".

1.I'm so desperate I wish I hadn't moved here

2.As far as Mr and Mrs Brown were concerned the hotel should shut down until a more nearly adequate staff can be assembled

I've now left this forum.

Try
http://thegrammarexchange.infopop.cc/eve/forums/a/frm/f/340600179

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thanks for the website, it seems cool at first impression, very detailed.

No sweat

French more relaxed.