Question formation
Auxiliary verbs
Present perfect (simple and continuous)
Adverbs
Narrative tenses
Passive (all forms)
Conditionals and future time clauses
Unreal conditionals
Past modals
Verbs of the senses
Gerunds and infinitives
Used to/be used to/get used to
Reporting verbs
Articles
Plural nouns
Have something done
Quantifiers: all/every, etc
Structures after wish
Clauses of contrast and purpose
Relative clauses