She often saw her dance这是一个什么句子结构?怎么判断的?

She often saw her dance这是一个什么句子结构?怎么判断的? Ask her to dance 请问这句中to dance是句子的什么成分? ( ) Mrs.Brown often saw her son ____basketball when she was I saw her wash her face句子结构 i saw her with them,at least,I thought it was her.这句话的语法结构是怎 I saw her dance yesterday变被动 watch him ( ) A dance B dances C dancing she often helps her i saw that she was singsing?这个句子对吗?后面的singing的语态是由什么决定的? 这句话分析句子结构I often heard her playing the piano in the room las She often her shoes 请问：一个英语句子She is as plain as her mother is beautiful.这是我四级书上的 The girl usually does as her mother says 怎么翻译 句子结构是怎样的?