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Present Perfect

S + have/has + V3/ed

Unspecified time before now; life experience; result now.

Components

Subject
have/has
Past participle

Usage Notes

Use with ever/never/just/already/yet; contrast with Past Simple.

Common Mistakes

Using Past Simple with ever/never
Wrong past participle

Examples

I have visited London twice.
Tôi đã thăm London hai lần.
She has already finished her homework.
Cô ấy đã hoàn thành bài tập về nhà.

Present Perfect: Form, Uses, Examples | WISE English