1. haven't unpacked
2. have never tried
3. have just finished - wrote
4. have you lived - came
5. Have you typed - finished - gave
* HTHT: S + have/has + Vpp ...
- yet/never -> câu phủ định, nghi vấn
- just
* QKĐ: S + Ved/II ...
- one/two/three... days ago
- yesterday evening, in + khoảng tg ở QK