English grammar — B1
Grammar explanations, examples and common mistakes for CEFR B1.
English grammar — B1
Present Perfect Continuous
Past Perfect
Future Continuous
Future Perfect
Present Tenses for Future
Narrative Tenses
Used to vs Would
Second Conditional
Third Conditional
Mixed Conditionals
Wish + Past Simple
Wish + Past Perfect
Passive: Present and Past
Passive: Perfect and Future
Passive with Modals
Have Something Done
Modals of Deduction: Present
Modals of Deduction: Past
Should Have / Could Have
Need and Needn't
Defining Relative Clauses
- Who, which, that: a clause that identifies the person or thing you mean
- Where, when, whose: place, time, or possession in a relative clause
- Omitting relative pronouns: when you can leave out who/which/that
- Prepositions in relative clauses: at the end or before whom/which
- Commas in relative clauses: identification or extra information
- Common mistakes in relative clauses