Like and as

As if/ as though/ like

Third Conditional and 2nd Conditional

Countable and Uncountable nouns

So and such

Prefer and Would Rather

Have got and have

Enough and too

Singular and plural (exceptions)

1st conditional

For/Since

Prepositions of time(in, on, at)

Third 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)

Determiners: each, every

Modals (1)

Present Continuous vs. Present Simple

Modals (2)

Modals in the past (1)

Present Perfect

Present Continuous

Past Perfect Continuous

Present Simple vs. Present Perfect

Reported questions.

Past Perfect

Prepositions of place: in, at

Used to do

Type 2 Conditionals

Some vs. Any

Wish

Past Simple vs. Past Continuous

Even if/ even when/ even though

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

Myself/ yourself/ themselves etc.

No/ none/ any/ nothing/ nobody etc.

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

Present Perfect vs. Past Simple – main differences

Present Perfect vs. Present Perfect Continuous

The genitive (possession)

Expressing the purpose