desk
[desk]blackboard
[ˈblækbɔːd]on
[ɒn]in
[ɪn]where
[weə(r)]the
[ðə , ði]Chair
英 [tʃeə(r)]under
英 [ˈʌndə(r)]Where is the ruler?
It’s on the desk.
Where is the book?
It’s in the desk.
Put your schoolbag on the chair.
Put your schoolbag under the chair