Differentiate between the present perfect and past perfect tenses.
A. Present perfect describes actions that will happen; past perfect describes actions that are currently happening.
B. Present perfect is used for future actions; past perfect is used for ongoing actions.
C. Present perfect indicates relevance to the present; past perfect indicates an action completed before another past action.
D. Present perfect indicates an action completed in the future; past perfect indicates an action that is still ongoing.

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Modal Verbs for PossibilityContractions and ConjunctionsPast Perfect and Past Perfect Continuous TenseAlthough / DespiteModals of ProbabilityConjunctionKinds of NounsSimple Present Tense with Adverb of FrequencyGrammar : can, could and be able toEd and Ing EndingsOther quiz:
Verb To Be › ViewChoose the correct option.
A. Is he tall?
B. He is tall?
Conditionals and Modals of Probability › View
The structure to the Third Conditional is …
A. if + past simple, …would + infinitive
B. if + present simple, …would + infinitive
C. if + past perfect, …would + have + past participle
D. if + present simple, …will + infinitive
Future Tenses › ViewBy 12 o’clock, we _____ playing tennis.
A. will finish
B. will be finishing
C. will be finished
D. will have finished
Grammar › View
Why ________________________?
A. those men are laughing
B. are laughing those men
C. are those men laughing
D. laughing those men
