We don't allow such things to be done.为什么用done?

We don't allow such things to be done.为什么用done? the teacher wouldn't allow such a thing..wouldn't allow能改为will't allow don't allow吗 We don't allow smoking here(改为同义句) We don’t allow smoking here.改为被动语态 we don`t allow smoking here被动语态求解 We don't allow people _____(smoke)in the office. We don't allow____in our offices,but we allow people____in the ____rooms.(smoke) don't allow ____ in the meeting room ,we don't allow ____ in the meeting room .a.smoking b.smoke c.to smoke d.to smoking we don't allow smoking here 改为同义句 Smoking ------ ------ -------- here we don't allow smoking here 改同意 smoking（）（）（）here We don't allow pets in this hotel.同意句转换 We don't allow pets in this hotel用简单的英语解释下列句子 we don't allow -----in the library为什么不是to smoke 而是smoking We don't allow smoking in the reading room.请将上句改为被动语态, We don't allow the man to smoke here .被动语态 Sorry,we don't allow smoking in the lecture room.这句话意思是什么? We don't allow eating in the library同义句 You___ ____ ____eat in the library 121 can i smoke here?sorry we don;t allow ___heresmoking people smokingwhy?