I saw her dance yesterday变被动

I saw her dance yesterday变被动 I saw her dance 中的dance是什么词?在句中是什么成份?到底是什么词？ i saw her ----(dance) beautifully in the dining just now.yes,she is often seen ---- (dance) there. I saw her dancing yesterday.的被动态,应用She was seen dancing...还是to dance? they saw her dance yesterday 改被动句 I saw her play when I was 求音乐 i saw her making pancakes She often saw her dance这是一个什么句子结构?怎么判断的? I saw her wash her face句子结构 I saw her there years ago.和I saw her there years before. I saw saw saw i saw him dancing和i saw him to dance 意思有不同吗?句子语法有错吗? I finally saw the once and I jump rabbits dance girl I often saw him dance in the park in the evening.为什么是用dance,而不是用dancing呢? I saw her dance with Tom in the hall改为被动语态She ___ ___ ___ ___with Tom in the hallEnglish is widely spoke in the world变主动语态People ___ English ___ in the world yesterday I saw some girls ___ over there A dance B.dancing I saw a girl dance under the tree yesterday.变为被动语态 I saw a girl dance in the classromm.（改错）并说明原因