LetschantAhat,ahat,it’sonthebed;Abed,abed,it’sintheroom;Adog,adog,it’sunderthetree(树)；Dictionaries,dictionaries,they’reonthedesk;Books,books,theyareinthebookcase；Chairs,chairs,theyareunderthetable.

Unit4Where’smyschoolbag?SectionB（3a—3b