6. THÌ QUÁ KHỨ HOÀN THÀNH (Past perfect)
vKhaúng ñònh : S + had + V3 / V-ed …
vPhuû ñònh : S + had + not + V3 / V-ed …
vNghi vaán : Had + S + V3 / V-ed …. ?
Use
w Dieãn taû haønh ñoäng xaûy ra tröôùc moät haønh ñoäng khaùc hoaëc thôøi ñieåm khaùc trong quaù khöù .
Caùch nhận biết:
Ex: My parents had already eaten by the time I got home.
Until yesterday , I had never heard about it .
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