Countable - Uncountable nouns
First conditional
Present simple - present continuous - past simple
Second conditional
Reported speech
Present Perfect: ever - never, just, gone - been
Third conditional
WAS-WERE and DID questions
Present perfect simple or continuous
Have to - don't have to
Was - were - there was - there were
Modal verbs - Upper intermediate level
Zero Conditional
Reported questions
Wish Clauses