Вы можете сказать те же самые предложения, используя: just, already, yet, never, ever?
1. We have reached the settlement.
2. They have sailed from London.
3. I have seen a round table.
4. The plane has appeared in the airport.
5. Have you seen that beautiful island?
6. He has been interested in collecting stamps.

Конечно! Вот как можно переделать ваши предложения, используя just, already, yet, never, ever:

1. We have reached the settlement.

   • We have just reached the settlement. (только что)

   • We have already reached the settlement. (уже)

2. They have sailed from London.

   • They have just sailed from London. (только что)

   • They have already sailed from London. (уже)

3. I have seen a round table.

   • I have never seen a round table. (никогда)

   • Have you ever seen a round table? (когда-либо)

   • I have already seen a round table. (уже)

   • I have just seen a round table. (только что)

4. The plane has appeared in the airport.

   • The plane has just appeared in the airport. (только что)

   • The plane has already appeared in the airport. (уже)

   • The plane hasn’t appeared yet. (еще не)

5. Have you seen that beautiful island?

   • Have you ever seen that beautiful island? (когда-либо)

   • Have you seen that beautiful island yet? (еще)

6. He has been interested in collecting stamps.

   • He has always been interested in collecting stamps. (всегда – близкое по смыслу к never/ever)

   • He has never been interested in collecting stamps. (никогда)

Если хотите, я могу сделать таблицу, где каждому предложению будут соответствовать все варианты с just, already, yet, never, ever для наглядности. Это сильно упрощает запоминание.

Хотите, чтобы я так сделал?