Gấp giúp mk bài này với mng

Cấu trúc “used to + verb” được sử dụng để nói về những thói quen hoặc trạng thái trong quá khứ mà hiện tại không còn nữa.

Khẳng định: Cấu trúc: Subject + used to + verb (nguyên mẫu)

Phủ định: Cấu trúc: Subject + didn’t use to + verb (nguyên mẫu)

Câu hỏi: Cấu trúc: Did + subject + use to + verb (nguyên mẫu)?

Đáp án:

`b.` For a start, all the continents used to be one large land mass. 

`c.` Obviously, there didn’t use to be cities and buildings, and forest covered a third of the Earth.

`d.` The climate was different, and animals such as the hippopotamus and rhinoceros used to exist in northern Europe.

`e.` Many mountains in Europe used to be active volcanoes. 

`f.`  Early people didn’t use to live in complex societies, but in small groups in places where they could find food.

`g.` What did people use to eat? They used to eat whatever they could find. 

`h.` Early people didn’t use to stay in the same place, but used to travel long distances, following the animals they needed for food.

`b` used to form

`c` didn’t use  to be

`d` used to exist

`e` used to be

`f` didn’t use to live

`g` did they use to eat `-` used to eat

`h` didn’t use to stay `-` used to travel

`----------`

`(+)` S + used + to V

`(-)` S + didn’t use + to V

`(?)` (Wh) + Did + S + V?

`->` Diễn tả một thói quen trong quá khứ mà không còn tiếp tục ở hiện tại.