1. время pas simple. положительное предложение. i played compyter games yesterday. отрицательное: написать. вопросительное: написать. 2. время past progressive положительное: i was playing compyter games at 5 o'clock yesterday. отрицательное: написать. вопросительное: написать. 3. время past perfect положительное: my father had come home by 6 o'clock отрицательное: написать вопросительное: написать.

1. отрицание 
I didn't play the computer games yesterday
    вопрос
Did you play computer games yesterday? 
2. отрицание
I wasn't playing computer games at 5 o'clock yesterday
    вопрос
Was I playing computer games at 5 o'clock yesterday?
3. отрицание
My father hadn't come home by 6 o'clock
    вопрос
Had my father come home by 6 o'clock?

The fox is a wild animal. It lives in the forest. It has got red fur and a long furry tail. It has got sharp teeth and claws.  The fox uses its claws to get food, legs and tail to run fast, teeth to catch fish.  It is a good hunter. It catches mice, rats, rabbits and other small animals. It may also eat grasshoppers, birds' eggs, and even fruit and berries. It can jump and run. When it is in danger, it can run very fast.  It is a loving and careful parent because the fox gives food to its babies and teaches them to hunt.The fox is clever and cunny. It is a symbol of cunning because it deceives others by its tricky and wise mind.

Okay, it's really very unusual that you decided to learn Japanese! But I support your choice. If you want something, you need to do it! (need do it!  Без TO!, я бы тут использовала  MUST. You must do it!)
As for your questions, in my school I study only English. But I HAVE an in-depth study of  (the  - не нужен)English language. (ПЕРЕФРАЗИРОВАЛА)  I also want to learn Korean, because I like watching Korean TV series and once I dream to visit Korea. And soon I will go to the Korean language school at the Korean Embassy!    

VERY GOOD!