I am at school与I was at school的区别

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I am at school与I was at school的区别
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I am at school与I was at school的区别
I am at school与I was at school的区别

I am at school与I was at school的区别
前一个是现在时,后一个是过去时啊

我现在在学校
我曾经在学校

一个现在时一个过去时

第一个是一般时,表现在的状态
后一个是过去时,表示过去在学校,但现在已不在了~

I am at school与I was at school的区别在于:
I am at school am表示现在进行时
I was at school was表示过去时

第一句可理解为“我是学生”或“我现在在学校”
第二句是说“过去某时我在学校”

时态区别

I am at school是一半现在时
I was at school是一般过去时
was是am的过去形式
从中文翻译也可以看出
I am at school我在学校
I was at school我曾经在学校