Irregular Verbs: Infinitive and Past Participle the Same

1Công thức

2Giải thích

Nhóm động từ bất quy tắc có nguyên mẫu và quá khứ phân từ giống nhau, chỉ quá khứ đơn khác (come-came-come, run-ran-run).

Irregular verbs whose base form and past participle are the same, with a different past simple form (come-came-come, run-ran-run).

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

• He came home late last night.

• Has she become a manager yet?

• They ran five kilometres this morning.

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)