1. Non-Finite Verbs
1.1. Infinitives
1.1.1. To+Simple verb form
1.1.2. Never -s, -es, -ed, -or -ing endings!
1.1.3. No To
1.1.3.1. feel hear help let make see watch
1.1.3.2. special verb + direct object + infinitive - to
1.2. Genunds
1.2.1. Every G. ends in ing.
1.2.2. Function as NOUNS
1.3. Participles
1.3.1. Present
1.3.1.1. ends in -ing
1.3.2. Past
1.3.2.1. regular verbs
1.3.2.1.1. end in -ed
1.3.2.2. irregular verbs
1.3.2.2.1. do not follow the same pattern
1.3.3. Functions
1.3.3.1. as Multipart Verbs
1.3.3.1.1. auxiliary verbs + participles
1.3.3.2. as Adjetives
1.3.3.2.1. Present
1.3.3.2.2. Past
1.3.3.3. as Nouns
1.3.3.3.1. Whenever a present participle functions as a noun, you call it a gerund.
2. Finite Verbs
2.1. Transitive Verbs
2.1.1. Direct Object!
2.1.1.1. to whom?
2.1.1.2. to what?
2.2. Intransitive Verbs
2.2.1. NO Object
2.3. Linking Verbs
2.3.1. no action
2.3.1.1. conect Subject + Subject Complement (be, become, see, appear, remain)
3. Helping Verbs
3.1. Primary Auxiliary
3.1.1. be + vb
3.1.2. do + vb
3.1.3. have + vb
3.1.4. will + vb
3.2. Modals (permorm semantic function)
3.2.1. Necesity or obligation
3.2.1.1. should
3.2.1.2. must
3.2.1.3. ought
3.2.2. Possibility
3.2.2.1. might
3.2.2.2. could
3.2.3. Willingness or ability
3.2.3.1. will
3.2.3.2. can
3.2.4. do not take "-s" in the third person
3.2.5. use "not" to make modal verbs negative