`5.`Betty has not ridden to work for `5` days. 

`6.` The last time he played tennis was in `2020.` 

`-` The last time `+` S `+` Ved/bqt: Lần cuối cùng làm gì

`*` HTHT: `(-)` S `+` have/has `+` not `+` PII/ed 

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Các công thức đổi HTHT - QKĐ

S + has/have + not + V3/ed + for/since + time 

--> S + last + V2/ed 

--> The last time + S+ V2/ed + was + time 

--> It is / has been + time + since + S+ (last) + V2/ed 

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4. My father has not been to Vung Tau for 2 years.

5. Betty has not ridden to work for 5 days.

6. The last time he played tennis was in 2020.

7. The last time I met her was 2 months ago.

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