Công thức thì quá khứ hoàn thành
Câu khẳng định
S + had + VpII
She had had breakfast before we came. ( Cô ấy đã ăn sáng trước khi chúng tôi tới. )
Câu phủ định
S + hadn’t + VpII
We hadn’t eaten anything by the time our father returned
Câu nghi vấn
Had + S + VpII ?
Had he left when we went to bed?
Công thức quá khứ hoàn thành tiếp diễn
Câu khẳng định
S + had + been + V-ing
They had been working for four hours when she telephoned
Câu phủ định
S + hadn’t + been + V-ing
They hadn’t been talking to each other when we saw them
Câu nghi vấn
Had + S + been + V-ing ?
Had he been waiting for me when you met him?
Tag: của và cách dùng
