There used to be a big tree in front of the house.把此句改成否定句怎么改?

问题描述:

There used to be a big tree in front of the house.把此句改成否定句怎么改?

Therer is not any tree in front of the house . 在屋子前面没有任何的树 there isn’t a tree in front of the house. There isn

used to---------------used NOT to

There didnt use to be a big tree in front of the house
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