will と would は難しいですね！「will」の過去形と考えるよりも、別のものとして考えた方が分かりやすいかもしれません。
間接話法 (will —> would)
“I will go to the park tomorrow.”
—> He said he would go to the park tomorrow.
仮定法 (would / will)
If I had more time, I would to Germany.
If I go to Germany, I will eat sausage.
Wish (これも仮定法) (would)
I wish you would come to Japan.
Would you like to eat dinner with me?
Would you mind helping me do my homework?
Will you go to the park tomorrow?
I’ll go to the park tomorrow.
中級以上のオフィスアワーで詳しく説明できます！いつでもご参加ください。Please join anytime.