viết lại câu bằng cấu trúc used to

`***` Cấu trúc 'used to' (đã từng):

`(+)` S + used to + V-inf

`(-)` S + didn't use to + V-inf/S + used not to + V-inf

`(?)` (WH-) + did + S + use to + V-inf?

`->` Diễn tả một hành động thường xuyên xảy ra trong quá khứ nhưng đã kết thúc ở hiện tại

 `---------`

`2.` Who used to take care of you when you were a toddler?

`3.` Jim didn't use to be interested in reading books when he was small.

`4.` My brother used to have his hair cut short when he joined the army.

`5.` Dennis used to smoke, but he gave up three years ago.

`6.` My parents used to live in the USA when they were young.

`7.` Jim used to be my best friend.

`8.` When he was younger, my uncle used to be a national swimming champion.

`9.` I used to dislike eating ice cream when I was a child.

`10.` When Barbara was Italy, she used to stay with an Italian family

` 2`. Who used to take care of you when you were a toddler?

` 3`. Jim didn't use to be interested in reading books when he was small.

` 4`. My brother used to have his hair cut short when he joined the army.

` 5`. Dennis used to smoke, but he gave up three years ago.

` 6`. My parents used to live in the USA when they were young.

` 7`. Jim used to be my best friend.

` 8`. When he was younger, my uncle used to be a national swimming champion.

` 9`. I used to dislike eating ice cream when I was a child.

` 10`. When Barbara was Italy, she used to stay with an Italian family

` ---------`

` -` used to + V-inf : đã từng làm gì trong quá khứ mà bây giờ không làm nữa

` -` be used to + V-ing : đã quen với việc gì đó, không còn lạ lẫm

` -` get used to + V-ing : đang làm quen với việc gì đó