She is often seen to dance under the big tree 是什么时态?

She is often seen to dance under the big tree 是什么时态? She is often seen -------- the old woman.A,help B,to help C,helping D,help to - i saw betty go to Grandpa Zhang's home just now - yes ,she is often seen __the old man with hishis 后面是housework 回答具体些 She is often seen ( )the old man with his housework.A.to help B.help C.helps该选哪个呢 He is often seen to dance in his room改被动语态 her home is near school .she often __ to school i saw her ----(dance) beautifully in the dining just now.yes,she is often seen ---- (dance) there. ①She was seen to dance by them.②She has that is told to you by Tom?③She is often heard to sing this pop song.被动语态中,这里为什么动词的过去分词后有to?由于是刚刚预习九年级新课,还不太懂,请讲清楚些,如果 Play,often _______ as an activity for young children,is still important in the socialdevelopment of teenagers.A.to see B.seeing C.to be seen D.seen she ( ) often ( )【hear】to sing in her room答案是she is often heard to sing in her room.为什么?. let's try to c_____ the cables to the power station water is often seen in the f___of gas she is making some cards 对some cards提问 2 she often goes to the library 对often提问 She is often 什么white Tom is often seen English aloud every morning in the classroom.C.reading D.to read如何选择,为什么? The old man is often seen( )in the park withis wife.A.to walk B.walk C.walking D.walked She is helpful.She often gives her（）to others on a bus. She often before going to bed.Now she is in the bathroom she often listens to the