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1·I go shopping every three days.

我每隔三天购物一次。

2·I go there every three days.

每三天我去那里一次。

3·There's a film every three days.

每三天有一部电影。

4·I I go shopping every three days.

我每隔三天购物一次。

5·That's more than once every three days.

每三天一次！

6·He comes to see us every three days.

他每隔三天来看我们一次。

7·We have history class every three days.

每 隔 三 天 我们上一节历史课。

8·Debbie phones her mother every three days.

黛比每隔两天给她母亲打次电话。

9·I have to see my dentist every three days.

我每隔三天就要去看一次牙医。

10·You can water the flowers every three days.

你可以每三天给花浇一次水。