2 câu trả lời
Công thức thì Quá Khứ Hoàn Thành :
+) S + had + Vpp + O
-) S + had not (hadn't) + Vpp + O
?) Had + S + Vpp + O ?
$#Keisha$
Công thức:
+) S + had + past participle
VD: They had lived in London when I first met them
-) S + had not + past participle
hadn't
VD: She was worried because she hadn't prepard the lesson well
?) Had + S + past participle?
VD: Had she met his before?
`#arktrung`
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