This series of books is designed to help 5-7-year-olds learn new words within a particular grammatical context. Each book in the series focuses on a specific aspect of the language.\r\n\r\nNow and Then focuses on the present and past tense forms of the irregular verbs, e.g. buy bought, go went, take took; and verbs for which the past tense is not formed by just adding -ed, e.g. cry cried, fry f…