Countable - Uncountable nouns

First conditional

Second conditional

Present simple - present continuous - past simple

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

Zero Conditional

Modal verbs - Upper intermediate level

Reported questions

Wish Clauses