Bài Thi Trắc Nghiệm Tiếng Anh Thì Quá Khứ Đơn

Khẳng định: S + had + V3/V-ed
→ She had finished her homework before dinner.

Phủ định: S + had not (hadn't) + V3/V-ed
→ He hadn't eaten anything before the meeting.

Câu hỏi: Had + S + V3/V-ed?
→ Had they left before you arrived?

Diễn đạt hành động xảy ra trước một hành động khác trong quá khứ.
→ When I arrived, the film had already started. (phim bắt đầu trước khi tôi đến)

Dùng với before / after / when / by the time:
→ By the time she called, I had left the office.
→ After he had studied for hours, he took a break.

already — He had already gone home.
just — She had just finished when he called.
never — I had never seen that film before.
before / after / when — khi hai hành động quá khứ cùng xuất hiện.
by the time — By the time we arrived, they had left.
by + time expression — By 9 PM, she had cooked dinner.

Khi có hai hành động trong quá khứ:
→ Hành động xảy ra trước: dùng Past Perfect (had + V3)
→ Hành động xảy ra sau: dùng Simple Past (V-ed/V2)

Ví dụ: When she arrived (sau), he had already left (trước).
Lưu ý: Nếu dùng "before/after" đã rõ thứ tự, có thể dùng quá khứ đơn cả hai mệnh đề.

Câu điều kiện loại 3:
If + S + had + V3, S + would have + V3
→ If I had studied harder, I would have passed.

Reported Speech (lùi thì):
"I have finished." → She said she had finished.
"I saw him." → He said he had seen him.

Wish / If only (tiếc nuối):
→ I wish I had taken that job offer.