`1.` Ricardo used to get up at 6.00 when he was training for the Olympics.

`2.` What did you use to do on Saturday evenings?

`3.` Sophie used to be afraid of dogs when she was a little girl.

`4.` We used to give our teachers presents at the end of term.

`5.` Did you use to live next door to Mrs. Harrison?

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Cấu trúc "used to: đã từng

`-` Diễn tả một sự việc lặp đi lặp lại trong quá khứ trở thành thói quen và đã kết thúc ở hiện tại.

`-` Công thức:

$(+)$ S + used to + Vinf

$(-)$ S + did not/ didn't + use to + Vinf

$(?)$ Did + S + use to + Vinf?

=>
1. Ricardo used to get up at 6.00 when he was training for the Olympics.
2. What did you use to do on Saturday evenings?
3. Sophie used to be afraid of dogs when she was a little girl.
4. We used to give our teachers presents at the end of term.
5. Did you use to live next door to Mrs. Harrison?
Used to V : đã từng
(+) S used to V
(-) S didn't use to V
(?) Did S use to V?