5. I have never met such a generous person as my teacher.

6. I have never met such a famous person before.

7. When did they buy the house?

8. This is the first time I have read such an interesting novel.

9. Before he retired, he had worked hard for many years.

10. How long have you collected stamps?

*GT: - S + have/has never + VII such a/an + adj + N before.

        = N + be + the most adj/adj-est + N + S + has/have + VII.

- When + did S V-infinitive?

= How long + have/has + S + VII?

- This is the first time + S + have/has + VII.

= S + have/has never + VII before.

- After + S + had + VII, S + V-ed/VII.

= S + V-ed/VII before S + had + VII.

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