8.We don’t allow ______ in this room.A.smoking B.to smoke C.

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8.We don’t allow ______ in this room.A.smoking B.to smoke C.people smoking D.people to smoking
8.We don’t allow ______ in this room.
A.smoking B.to smoke C.people smoking D.people to smoking
这道题为什么选A呢?allow后加doing是什么意思

没有任何意思它不是语法而是个结构 allow doing sth 是被允许做某事的意思
再问：为啥不用to do
再答：英语中特定的短语结构是没办法改变的有的动词后面可以接 to do 也可以接doing 还有的不定式结构可以省略to ,但是有的只能用to do ,有的只能用doing

8.We don’t allow ______ in this room.A.smoking B.to smoke C. 明天英语考试急.We don’t allow ______ in this room.A.smoking B.to sm 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. Sorry,we don't allow smoking in the lecture room. We don’t allow _____ in this room. I don't mind ______ here.A.you smoke B.your smoking C.your s you don't have to smoke in the non-smoking room.为什么用don't ha we allow smoking in this room only改被动 We don't allow people _____(smoke)in the office. 英语在线主动改被动 we don't allow students to smoke. we built a bridg We don't allow/permit smoking in the offices．