A1 Elemental Past Simple I learn ed it The Past Simple tense is used to talk about things that happened or existed before now. With nost verbs, the past tense is formed by adding - ed: I work ed there He help ed me We use didn't (did not) to make negatives with the past simple: He didn't help me We use did tom ake questions with the past simple: Did he help me ? But there are a lot of irregular past tense forms in English. There verbs have no rules. For example, the verb know in the past simple will be knew : I know (Present Simple) I don't know (Present Simple) I knew (Past Simple) I didn't know (Past Simple) Here are some more important verbs: See--- saw Speak--- spoke Think--- thought Read-- read