两个结构变被动态分别为sb is allowed to do ,sth is allowed例如
We allow you to smoke here.被动:You are allowed to smoke here.
We allow smoking here.被动:Smoking is allowed here.
两个结构变被动态分别为sb is allowed to do ,sth is allowed例如
We allow you to smoke here.被动:You are allowed to smoke here.
We allow smoking here.被动:Smoking is allowed here.