25. She has done volunteer at that school since she graduated from university. (began) - She began ...............................................
2 câu trả lời
She began doing volunteer at that school when she graduated from university.
( S+started/began + Ving + ... = S + has/have + V3/ed )
`25` She began to do volunteer at that school when she graduated from university.
`-` Áp dụng cấu trúc sau
`-` S + started / began + V_ing / to V + khoảng thời gian `=` S + have / has + Vpp + khoảng thời gian
`=>` Câu quá khứ đơn
`(+)` S + V2 / ed
begin `->` began
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