Prepositions can be very confusing for English Language Learners to understand a simple chart like this could be displayed in a prominent place in the classroom and used as a resource not only for ELLs but for the whole class.
Present Simple. Daily Routines. Russian and English Flash Cards at Larisa School of Language help you learn the English and Russian languages fast. Present Simple is used to talk about permanent states, repeated or casual actions, wide known truths, laws of nature. We also use it to talk about the things that are scheduled or planned. www.larisaschooloflanguage.net/Present_Simple.html
All modal verbs are auxiliary verbs, which means they can only be used with a main verb. Modal verbs cannot be a main verb. They are used to express ideas such as possibility, prediction, speculation, deduction and necessity.