Verbs

There was/were
Negative imperative forms
Present continuous with future meaning
Past simple of listed regular verbs
Irregular past forms: came/did/had/
said/was/were/went
going to for prediction and intention
can for possibility
would like + noun phrase
-ing forms after like, stop
Infinitive forms after want, start, like

Verbs
Negative questions
Past simple of listed irregular verbs
will for offers, requests, and with future meaning
could for past ability and possibility
have to for obligation
would like + infinitive
Common phrasal verbs with transparent meanings
-ing forms after go, verbs of (dis)like

Verbs
Present perfect simple
Past continuous
Passive forms: present and past forms of be + past participle
is/was/has been able to
can't to deny possibility
could for requests and suggestions
must for obligation
shall for suggestions, plans, offers
need (to)/needn't for necessity
should (positive only) for advice
would for desires, preferences
to + infinitive after what/where etc
Infinitives after permitted verbs and adjectives, with too/enough/very, after indefinite pronouns/adverbs, infinitive of purpose
Question tags: positive tag following negative statement and vice versa

Verbs
Simple passive verb forms (except modal perfects)
Present and past continuous passive verb forms
Present simple for future reference
Present perfect continuous
Past perfect 
have something done
make/let + infinitive
used to
was/were going to
had better for advice or desirability
may/might for possibility
must for deduced facts
should/ought to for advice, duty, desirability
would for hypothetical situations
Question tags: positive tag following 

positive statement

Verbs 

Past perfect continuous

Future continuous  

get something done  

may for permission

would for willingness/refusal 

Verbs 

Future Perfect 

Modal perfects 

might for suggested course of action 

must  have / can’t have for assumptions 

should (have) for expectation 

will (have)  for assumptions 

would for habitual past actions