1. Some special situations
1.1. It
1.1.1. we can use it as a subject to start a sentences without caring any meaning . Often the sentences are about the weather, time or distance
1.1.1.1. I just bought a new dress and it looked not bad; it may not rain today
1.1.2. to start a sentences when the real subject is an infinitive or an - ing form
1.1.2.1. it won't take long to settle in
1.1.3. to refer to phrases, whole sentences or ideas
1.1.3.1. i only arrived last month and i sill finding it all a bit strange, actually
1.2. You and we
1.2.1. to talk about everybody in general we can use
1.2.1.1. you : In America you often eat bread for lunch
1.2.1.2. we: we often eat lunch in a bit of a hungry
1.3. They
1.3.1. used to mean experts or authorities
1.3.1.1. They have changed the law recently
1.3.2. when we do not know or dont need to say if the person is male or female
1.3.2.1. i asked a student if they like learning English and then they said no!
2. personal and possessive pronouns
2.1. we use pronouns to replace noun an avoi repetition of the noun
2.1.1. ex: i will introduce you to my friend, Mary. She is student from America
2.2. we use subject pronouns before verbs and object pronouns after verbs or prepositions
2.2.1. I only arrived last month
2.2.2. i have a lot of students staying with me over the years
2.3. we use possessive pronouns to replace a possessive determiner and a noun
2.3.1. i don't bring my phone here so can i use yours?
2.4. "its" is not used as a possessive pronoun
3. Reflexive pronouns (myself, yourself, himself,...)
3.1. used when the subjects and the object of the verb are the same
3.1.1. you can take it by yourself
3.2. to add emphasis to the subject or object
3.2.1. I finished all of the tests by myself
3.3. with "by" to mean on my own/on your own etc
3.3.1. I clean the kitchen and the living area by myself
3.4. after some set expressions in the imperative with yourself/yourselves
3.4.1. help yourself, look after yourself, enjoy yourselves