答语∶ They are+动词-ing形式(singing,playing,swimming.)(+其他) 例∶ -What are they doing?他们/她们正在做什么? -They are waiting for the bus.他们/她们正在等公共汽车。 3.现在进行时的构成 (1)现在进行时表示正在进行的动作或行为,常和now(现在),look(看)等...