Answer:The words we are talking about here are called 'auxiliary verbs' (often called helping verbs), and there are both primary and modal auxiliary verbs. Primary auxiliary verbs are: be, do and have. However I want to focus on modal auxiliary verbs such as: can, could, may, might, must, shall, should, will and would.
tumutukoy ito sa kinaroroonan ng mga tiyak na lugar sa ating daigdig kinalaman ang pinag-aaralan nito ang mga lungsod at latitud mga teritoryo at mga layon ng bawat lugar sa isa't isa