介词oninunder的用法通辽市首届“名师出高徒”中小学微课教学比赛chairdeskcarballon在上Itisonthehouse.它在房子上面。in在里面Itisinthehouse.它在房子里面。under在下面Itisunderthehouse.它在房子下面。oninunderWhereistheball？Itisonthedesk.Itisunderthechair.Itisinthebox.on在上面in在里面under在下面24/4/138SummingupSeeyou!
![介词oninunder的用法[9页]](https://www.peiji.com/assets/images/load.png)
