Grammar Topics
Browse and filter all grammar topics by level or category.
28 topics found
Must / Can't for Logical Deduction
Learn Must and Can't for logical deduction in English — Must for near-certain conclusions and Can't for near-certain impossibilities.
Present Perfect Continuous
Learn Present Perfect Continuous to focus on the duration of an ongoing activity, contrasted with Present Perfect.
Past Perfect
Learn Past Perfect (had + past participle) to show an action completed before another past action.
Should Have / Could Have / Would Have
Learn Should Have, Could Have, and Would Have to express regret and missed chances in English — essential for third conditionals.
Past Perfect Continuous
Learn Past Perfect Continuous (had been + -ing) to emphasise the duration of an activity before a past event.
Needn't / Needn't Have
Learn Needn't and Needn't Have to express unnecessary actions in English, and see the key contrast with Mustn't and Didn't Need To.
Causative Verbs
Learn causative verbs (have, get, make, let, help) to show one person causing another to do something.
Punctuation as Grammar
Understand Punctuation as Grammar — semicolons, colons, dashes — to fix comma splices and write with precision.
Derivation (Prefixes, Suffixes, Root Words)
Master Derivation with prefixes, suffixes, and Greek/Latin roots to decode new words and boost advanced vocabulary skills.
Advanced Discourse Markers
Master Advanced Discourse Markers (albeit, notwithstanding, by contrast) for sophisticated, formal academic writing.
Conversion (Zero Derivation)
Understand Conversion (Zero Derivation) where words shift class without a suffix, like to email, to google, to water.
Third Conditional
Learn the Third Conditional (If + past perfect, would have + past participle) to express regrets about the unchangeable past.