I go to school at seven every day.He is standing at the bus stop.是什么介词短语?I go to school at seven every day.He is standing at the bus stop.Let me have a look at the picyure.是什么介词短语?定语 表语 状语讲到问题的重点，ok?

状语，表示时间地点~~

at seven every day at the bus stop at the picyure这些都是介词短语
at seven every day做句子的时间状语
at the bus stop 做句子的地点状语
at the picyure这个我觉得是不是你打错了应该是at the picture吧，它做的是方式状语
介词短语可以做表语，例如：I am in the classroom.
介词短语可以做定语，例如:there is a boy behind the tree.

1.go to school
2.at the bus stop
3.(have a) look at
不要花太大力气去分析语法,你是这样学会中文的吗?
如果老师这样训练,说明这种方法不正确,要注意语言的实用,现在的教材都改了,教学方法也不能总是分析句子了