7　at home, at school和in school

1　at home 意为“在家”，常用作表语，home在这里为名词，前面不可加定冠词。

Is she at home ? 她在家吗？

He stays at home the whole day. 他整天都待在家里。

2　at school 和in school 常可换用，表示两种意思：①在上学，②在学校里，这种用法的school前不可加定冠词。

Alice is five. She isn't at school . 艾丽丝5岁，还没有上学。

She is at school in Beijing. 她在北京上学。

They often meet each other at school . 他们在学校里经常见面。

In school he often plays football. 他在学校里常踢足球。

提示

at/in a school意为“在学校里”，指地点。

My father teaches chemistry in a school near here. 我父亲在这儿附近的一所学校教化学。