Advance+Level+Grammar

[|Mixed conditionals]
ADVANCE LEVEL GRAMMAR [| Inversion: "Had I known...", "Should you need.]

[|Infinitives | Johnny Grammar | Learn English | British Council]
[|CONDITIONAL SENTENCES SHOULD, WERE TO] =[|Exercises Based on Part 3 of the Gerunds and Infinitives]=

[|Using stative verbs in the continuous form]
[|Subject-Verb Agreement 2] [|have + object + past participle.]