20xx春外研版三起六下module4unit1theballoonsareflyingawayppt課件3(已修改)
2024-12-03 00:11 本頁面
【正文】 2 3 4 5 1 6 7 :What is he doing? B: He is looking for… is he doing ? He __________(clean)the blackboard is the boy doing ? He ____________(carry) a bag. are they doing? They ____________________ are the boys doing? They ______________________ is cleaning is carrying are buying things are playing basketball 1 .He is cleaning the blackboard. 2 He is carrying a bag. 3 They are buying things. 4 They are playing basketball. 構(gòu)成： be+動 ing〔現(xiàn)在分詞〕形式 注：動詞的現(xiàn)在分詞形式 不可缺失 be動詞
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