I was really glad (that) I went to the party in the end. = I was really glad to go to the party.
I am happy (that) I don't have to go to school today. = I am happy not to have to go to school today.
I was happy (that) I didn't have to go to school yestereday. = I was happy not to go/not to have gone to school yesterday.
I was very angry that I hadn't visited her before. = I was very angry not to visit/not to have visited/not to have had visited her before.
Šly by tyto věty nějak v tomto duchu zkrátit?
Děkuju.