ModalVerb - It is a verb that combines with another verb to indicate mood or also known as modak auxiliary verb.
ExpressingObligation - In order to express the idea of obligation, to talk about rules, duties, or orders, to give strong advice to other people or to ourselves.
ExpressingProhibition - In expressing prohibition, it uses can't, mustn't, shouldn't, or to show something that is prohibited.
Expressing Permission - To show permission such as can + may.
Condition - Extremely important in English language because us express things that may happen in the present and the future.
Conditional Statements - Express the result of a particular action or reason/conditions.
Zero Conditionals - It deals with habits and general truths such as laws.
Second Conditional - To express unlikely scenarios. Neither the reason will occur.
First Conditional - It is to express an outcome that is likely to happen in the future.
Third Conditional - We use it to explain how the current circumstances might have been different.
Communicative Style - It is a speech style which portrays how a language is characterized style in terms of degree in formalities
Frozen Style - National Anthem, Holy Mass, Constitution, Religious Rites, Oath, Prayer