Hard time occurred.

My last note was written four days ago. (passive voice = was/were + verb 3rd form)
There were many troubles happening on these days. (plural)
Some good events was happened too. (past simple)
I had repaired wash of windshield the windscreen wipers? on my car. (past simple)
But how long has my wife had been hated me? (present perfect)

You only need past perfect (had repaired/had hated me) when you already have the past simple in the same sentence, to show that one action happened before the other. e.g.

1. My windcreen wipers broke, even though I had repaired them last week. (I repaired last week, then they broke)

2. I realised my wife was unhappy, but how long had she hated me? (she hated me for some time, then I realised she was unhappy)

Hope it helps:)

Is it all about the Past Tense?
I think, I've missed something...

Hard time occurred.

My last note was written four days ago.
I had many troubles on this day
Some good events happened too.
I repaired the windshield wipers of my car.
But how long has my wife been hating me?

Is it all about the Past Tense?
I think, I've missed something...

Hard times occurred.

My last note was wrote written four days ago.
There was were many troubles (happening on these days) in the last few days. 
Some good events was  (have) happened too.
I had repaired wash of windshield the windshield wipers of by my car.
But how long has my wife had been hating me?

Is it all about the Past Tense?
I think, I've missed something...

Hard times occurred.

My last note was written four days ago.
There was a lot of trouble since then.
Some good events was happened too.
I had repaired the windsheild wipers of my car.
But how long has my wife had been hating me?

Is it all about the Past Tense?
I think, I've missed something...

I changed the line about trouble to sound a little more natural.:-) In the last sentence it could be "had been hating" or "has been hating"--if you are wondering if she is still hating you now it would be "has been hating." But I hope she's not!

Hard time occurred.

My last note was written four days ago.
There were many troubles happening on these days.
Some good events happened too.
I repaired windshield wipers of my car.
But how long has my wife been hating me?

Is it all about the Past Tense?
I think, I've missed something...