1. Verbs
1.1. Tense
1.1.1. Past
1.1.1.1. Before now
1.1.1.1.1. E.g.: John went to school
1.1.2. Present
1.1.2.1. Now
1.1.2.1.1. E.g.: John goes to school
1.1.3. Future
1.1.3.1. After now
1.1.3.1.1. E.g.: John will go to school
1.2. Aspect
1.2.1. Simple
1.2.1.1. E.g.: Paul eats dinner
1.2.2. Continuous
1.2.2.1. E.g.: Paul is eating dinner
1.2.3. Perfect
1.2.3.1. E.g.: Paul has eaten dinner
1.3. Mood
1.3.1. Indicative
1.3.1.1. E.g.: Jenny went to sleep
1.3.2. Imperative
1.3.2.1. E.g.: Go to sleep!
1.3.3. Subjunctive
1.3.3.1. E.g.: I told you to go to sleep
1.4. Voice
1.4.1. Active
1.4.1.1. E.g.: Sue bought a new CD
1.4.2. Passive
1.4.2.1. E.g.: A new CD was bought (by Sue)
2. Prepositions
2.1. Time
2.1.1. On, in at, since, for, during, ago, before, to, past, until, till, by...
2.2. Place
2.2.1. In, at, on, by, next to, beside, below, under, above, over, across, towards, into...
2.3. Other
2.3.1. From, off, of, out of, at, about, by...
3. Pronouns
3.1. Personal pronouns
3.1.1. 1st
3.1.1.1. I, me, we, us
3.1.2. 2nd
3.1.2.1. you
3.1.3. 3rd
3.1.3.1. He/she, him/her, it, they
3.2. Demonstrative pronouns
3.2.1. This, these, that, those
3.3. Relative pronouns
3.3.1. Who, whom, which, that, where...
3.4. Interrogative pronouns
3.4.1. What, who, when, where, how, whom...
3.5. Reflexive pronouns
3.5.1. Myself, yourself, himself/herself, itself, ourselves, yourselves, themselves
3.6. Possessive pronouns
3.6.1. My, your, his/her, our, your, their
3.7. Indefinite pronouns
3.7.1. Anything, everybody, another, each, few, many, none, some...
4. Interjections
4.1. Oh!, aw!, hey!, well, um, ah...
5. Conjunctions
5.1. Coordinating
5.1.1. And, but, or, so...
5.2. Subordinating
5.2.1. After, as soon as, before, although...
6. Nouns
6.1. Number
6.1.1. Singular
6.1.1.1. E.g.: a dog, a chair
6.1.2. Plural
6.1.2.1. E.g.: dogs, chairs
6.2. Countable
6.2.1. E.g.: a table, a spoon
6.3. Uncountable
6.3.1. E.g.: rice, water
6.4. Case
6.4.1. Subjective
6.4.1.1. I, you, he/she, we, you, they
6.4.2. Objective
6.4.2.1. Me, you, him/her, us, you, them
6.4.3. Possessive
6.4.3.1. Mine, yours,his/her, ours, yours,theirs
6.5. Gender
6.5.1. Masculine
6.5.2. Feminine
6.5.3. Neutral
6.6. Common nouns
6.6.1. E.g.: carpet, shoes, door
6.7. Proper nouns
6.7.1. Always in capital letters
6.7.1.1. E.g.: Spain, Lucy...
6.8. Abstract nouns
6.8.1. E.g.: hope, love, ability
6.9. Concrete nouns
6.9.1. E.g.: horse, floor, flower
7. Adjectives
7.1. Degree
7.1.1. Positive
7.1.1.1. E.g.: tall, beautiful
7.1.2. Comparative
7.1.2.1. E.g.: taller, more beautiful
7.1.3. Superlative
7.1.3.1. E.g.: the tallest, the most beautiful
7.2. DIfferent types
7.2.1. Demonstrative
7.2.1.1. E.g.: this, that, those...
7.2.2. Numeric
7.2.2.1. E.g.: one, two, three...
7.2.3. Quantitative
7.2.3.1. E.g.: more, enough, some, half...
7.2.4. Qualitative
7.2.4.1. Colour, size, shape,...
7.2.5. Possessive
7.2.5.1. E.g.: my, his, your...
7.2.6. Interrogative
7.2.6.1. E.g.: which, what, whose...
7.3. Determinant adjectives
7.3.1. A, an, the, my, your, some, any, several, enough, any.
7.4. Order of collocation
7.4.1. Determinant - opinion - size - age- shape - colour - origin - material
8. Adverbs
8.1. Degree
8.1.1. Positive
8.1.1.1. E.g.: happily
8.1.2. Comparative
8.1.2.1. E.g.: more happily
8.1.3. Superlative
8.1.3.1. E.g.: the most happily
8.2. Two types
8.2.1. Regular (adjective + -ly)
8.2.1.1. E.g.: carefully, happily
8.2.2. Irregular
8.2.2.1. E.g.: good - well, hard - hard
8.3. Modify
8.3.1. Verbs
8.3.2. Adjectives
8.3.3. Adverbs
8.3.4. Quantities
8.4. Type of adverbs
8.4.1. Manner, degree, frequency, time, place
9. Article
9.1. Determinate
9.1.1. The: She is the person I trust
9.2. Indeterminate
9.2.1. A, an: He bought a new house