The teacher is smiling at the girl.中at的作用?

The teacher is smiling at the girl.中at的作用? the girl smiling at me is Lily这个句子为什么用smiling,怎么分析这个句子的结构 The teacher came into the classroom smiling at us. 是英语中的什么句子 The girl ( ) red is my teacher's daughter.( )中应填at还是for还是in The girl ( ) fair hair is my English teacher Nancy.A.in B.at The girl is good at()(spell) The girl is good at English.的同义句是什么 the little girl looked at her Chinese teacher in( ) That smiling young man ———— at the entrance to the room is v the teacher is very angry with him at what he said 中为什么要用at The girl is a good at English的同义句The girl ___ ___ ___ Englis at least at most 在句子中的的位置.比如The girl is 7 at least .还是The gi