【正文】
know what to do this afternoon. — ________(加入) us to play basketball. Join。t。take part in 。t The red pen can39。t — Must I finish the work on time — Yes,you must./No,you needn39。 Step 3 完成教材 1a2d的任務 聽 1b ,然后用 1b 鮑勃和安娜在公園里發(fā)現(xiàn)了一個書包。 belong to 后可接名詞或代詞賓語,不能接物主 The blue sweater belongs to Li mother bought it for him yesterday. The boy belongs to the singing group of Grade This book belongs to me. That new bike in the corner belongs to must be Carla39。 /不,你不 ( 2)此處 must表示推斷,通常與 be連用,意為“一定是,肯定是”。s. 這支紅色的鋼筆不 can39。t 39。 may