Advanced grammar C1 C2

 British Council: 

passsives review, present simple and present continuous, avoiding repetition in a text, contrasting ideas, ellipsis, emphasis (cleft sentences, inversion and auxiliaries, inversion after negtive adverbials, inversion and conditionals, modals of probability, participle clauses, patterns with reporting verbs, possesion and noun modifiers, unreal time, word order in phrasal verbs)

ELT Concourse for learners of English:

adjective + preposition 1, adjective + preposition 2, articles 1, articles 2, concessive conjunctions, multi-word verbs, passive reporting verbs 1, passive reporting verbs 2, sentence re-ordering 1, sentence re-ordering 2, prepositions 1, prepositions 2, verb forms 1, verb forms 2, modal auxiliary verbs, cleft sentences, coordination, subordination, -ing forms in tenses, stative & dynamic adjectives

ESL Lounge student: Conditionals, Inversion, Tenses, Causative, Comparatives/Superlatives, 

Reported Speech, Future Continuous, Used To, Modal Verbs, Modals of Deduction, Quantifiers, Articles, Despite/Although, Relative Pronouns, Gerund or Infinitive, Purpose/Reason/Result, Miscellaneous

Singular or plural? Collective nouns, general statements