Irregular Verbs: Past Simple and Past Participle the Same

1Công thức

2Giải thích

Nhóm động từ bất quy tắc có quá khứ đơn và quá khứ phân từ giống nhau nhưng khác nguyên mẫu (buy-bought-bought, make-made-made). Đây là nhóm lớn nhất.

Irregular verbs whose past simple and past participle are the same form but differ from the base form (buy-bought-bought, make-made-made). This is the largest group.

3Khi nào dùng

• Forming the past simple
• Forming perfect tenses and the passive with the past participle

4Quy tắc cần nhớ

• Irregular verbs do not take -ed in the past simple or past participle
• Use the base form after did/didn't and after modals
• Where two forms are shown (burnt/burned), both are accepted; British English often prefers -t forms, American English -ed forms, and got/gotten differs between British and American usage

5Ví dụ

• She bought a new laptop last week.

• We have built a small cabin by the lake.

• He had kept the letter for years.

6Lỗi thường gặp

• Past simple used as participle: I have went / have wrote (should be have gone / have written)
• Participle used as past simple: She seen the film (should be She saw)
• Adding -ed to an irregular verb: buyed, teached (bought, taught)