Past Simple: form Adding ¬ed is the most common way to form a Past Simple verb.
Ex: The business leaders decided that the deal helped them both make more money, so they agreed to work together.
Ex: They hoped for the best but prepared for the worst when the horrible storm arrived in their city.
If the verb ends in a consonant and ¬y, change the ¬y into an ¬i before adding ¬ed. For example, hurry becomes hurried, and cry becomes cried. If the verb ends in a vowel and ¬y, then it doesn't change, as in played and stayed.
Ex: The students begged the teacher to postpone the exam until tomorrow because none of them studied last night.
Ex: Alice prayed for a new job. Her boss was rude and her colleagues annoyed her when they called in sick too often.
If a verb of one syllable (shop, chat, fit, rob, drop, clap,...) or two when the second syllable is stressed (kidnap, admit, ...) finishes in consonant + vowel + consonant, you need to double the last consonant, as in shopped and chatted.
Ex: When the rain stopped, we scanned through the listings in the newspaper and decided on a film at the cinema.
As you know, for negative sentences, add didn't before the main verb and for interrogative sentences, begin the sentence with did. In these cases, do not add ¬ed since did is already past tense.
Ex: Cory's CV didn't impress the company manager. He didn't have enough prior work experience.
Ex: Did you throw out the papers with the car information on them? I needed to show the paperwork to the insurance company, but I couldn't find it.