allow后面动词为什么可以加ingSir,we don't allow____in the hall.Sorry,i will go out.A.to smoke B.smokingC.to smoking D.smoke为什么答案是选B?不是allow sb to do sth

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allow后面动词为什么可以加ingSir,we don't allow____in the hall.Sorry,i will go out.A.to smoke B.smokingC.to smoking D.smoke为什么答案是选B?不是allow sb to do sth
allow后面动词为什么可以加ing
Sir,we don't allow____in the hall.
Sorry,i will go out.
A.to smoke B.smoking
C.to smoking D.smoke
为什么答案是选B?不是allow sb to do sth

allow后面动词为什么可以加ingSir,we don't allow____in the hall.Sorry,i will go out.A.to smoke B.smokingC.to smoking D.smoke为什么答案是选B?不是allow sb to do sth
allow doing表示允许做某事
allow sb to do sth 表示允许某人做某事
题干中没有提及sb 当然要用第一种用法了