play on the see-saw是什么意思?要检体中文!

play on the see-saw是什么意思?要检体中文! The dog can,t( )on the see-saw.A.play B.is playing C.playing the boy can't ( )on the see-saw A、play B、reading C、playing D、plays该选择哪个? playing we on see-saw the like(.)连词成句 he saw Tom___(play) in the street on my way to the post office.填什么形式,是playing 1.light _(go) 2 I can see some ( )(play) on the play ground.3 l1.light _(go)faster than sound.2 I can see some ( )(play) on the play ground.3 he ___(do)look well when I saw her last time .4 after the meeting ,we will have a party ,if you ____(be) fre see sb.do sth和see sb.doing sth.的区别?I saw a group of boys ( )football on the playground.A.played B.to play C.playing D.plays该选哪个,为什麽? see sb do see接从句?什么时候用see sb doing/do?什么时候see接从句?请参照：The students saw it____（happen/happened）when they were walking near the river.I could see the boys of Class Two____（play/played basketball）on the playg I see some boys( )(play)on the play ground all the time Can you see the boys( )soccet on the playground.A.play B.playing C.to play I saw the students ------- (play) volleyball on the playgroud at that time he saw some boys （）football on the playground.A、playing B、plays C、to play D、played他看到一些男孩正在操场踢足球.我知道watch（see）sb do something是看到事情全过程而doing是看事件正在进行.我也认同,但 将此句变为被动语态,每空一词.I saw them play football on the playground .They ------ -------- --将此句变为被动语态,每空一词.I saw them play football on the playground .They ------ -------- ------- ------- football on the play ——I saw him( )football on the playground yesterday()中填play还是playing? I saw li ming (play) near the river on my way home I saw li ming ---- (play) near the river on my house. We saw him play football on the playground.这句话有错误吗? I often see some boys_____(play)on the playground.I can often see them____(do) so.