Verb tenses: adding -ed and -ing
The basic form of a verb is called the infinitive. It normally occurs with the word to as in ‘I want to ask you a question.’ Verbs may change their spelling according to which tense is being used.
The past tense refers to things that happened in the past. To make the past tense of regular verbs, the ending -edis added to the infinitive ('I asked her a question'). The present participle refers to things that are still happening. To make the present participle, the ending -ing is added to the infinitive ('I am asking her a question').
