Grammar learning path · B2 Upper Intermediate
Past modal conclusions and necessity.
Use modal-perfect forms without confusing similar-looking structures. Begin with the full certainty scale for deduction and speculation, then focus on the sharp contrast between something that cannot have happened and something that happened but was unnecessary.
2 lessons11 exercisesIn order, or à la carte
Start path — Lesson 1
First lesson · Deduction & Speculation (Modals)
What you'll learn.
- Express present and past deductions at different certainty levels.
- Distinguish can’t have from needn’t have.
- Use continuous and passive modal-perfect patterns where the evidence requires them.
Before you start.
- Know common modal meanings and past participles.
Lessons in this path.
Take them in order- 1Lesson 1Deduction & Speculation (Modals)
Grades present and past conclusions with must, may, might, could, can’t, should, and will, including continuous deductions and evidence.
- 2Lesson 2Modals (can’t have & needn’t have)
Contrasts can’t have for impossible past conclusions with needn’t have for actions completed unnecessarily, including passive forms.
Ready?
Deduction & Speculation (Modals).
Begin with the first lesson and work through the practice at your own pace.