Present simple and present continuous
Past simple and past continuous
will, going to and present continuous
Time clauses with: as soon as, before, when, while, unless, as long as, provided that
First, second and third conditionals
Present perfect simple and past simple
Prepositions of time: for, since, ago, during
Future perfect simple and future continuous
Modal verbs: may, might, could, must, can't
Reported speech: questions and commands
Defining and non-defining relative clauses