Some vs. Any

No/ none/ any/ nothing/ nobody etc.

British English vs. American English

Present Continuous vs. Present Simple

Present Simple vs. Present Perfect

Past Simple vs. Past Continuous

Present Perfect vs. Past Simple – main differences

Present Perfect vs. Present Perfect Continuous

Past Simple vs. Present Perfect

Will vs. Going to.

Reported questions.

1st conditional

For/Since

Prepositions of time(in, on, at)

Third conditional

Third Conditional and 2nd Conditional

Verb patterns (ing)

Causes of concession (although, despite, however)

Causative have.

Compound adjectives of measurements

Be/get used to something

Modal verbs in the past (2)

Like and as

Determiners: each, every

Modals (1)

Countable and Uncountable nouns

Modals (2)

Modals in the past (1)

Present Perfect

Present Continuous

Past Perfect Continuous

Past Perfect

Prepositions of place: in, at

Used to do

So and such

Type 2 Conditionals

Prefer and Would Rather

Wish

Even if/ even when/ even though

Auxiliary verbs (have do can, etc.) I think so/ I hope so, etc.

Have got and have

Myself/ yourself/ themselves etc.

As if/ as though/ like

Enough and too

All/ every/ whole

Had better/ it’s time….

For/ during/ while

All/ all of, most/most of

Demonstratives (this/these, that/those)

On my own/ by myself

Conjunctions

The genitive (possession)

Expressing the purpose