there is a playground at our school为什么用at 不用in

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thereisaplaygroundatourschool为什么用at不用inthereisaplaygroundatourschool为什么用at不用inthereisaplaygroundatou

there is a playground at our school为什么用at 不用in
there is a playground at our school为什么用at 不用in

there is a playground at our school为什么用at 不用in
在小地方用at
在大一些的地方,如城市、街道等户外场所用in
这里操场不是像教室似的,在学校内部,属于半露天的状态,因而用at比in好一些.in的话,是在……内里,如in a car

单项选择：（）1.＿＿is the weather like today?---It's rainy.A.What B.how C.when D.why( )2.___can I go to the police station?And____way shall I go?A.what;which B.how;what C.how;which D.what;what( )3.where____you just now?i___on the playgroun Is there a window? There is a middle there is a cat there is a problem Is there a school Is there a house___? There is a Is there a. there is a There is a kitshen. There is a pair over is village a there there (.) There is a long r______ there. There( )(be)a football match,is there. there is a baby horse over there. there ,a there,is ,phone如何排列? where there is a life,there is a hope.