更常接表示“建议、提议、报价、理论”等意义的词（如4）；还可表示“（在就业、入学等方面）拒绝、不选中（某人）”（如6）或“因无用或不好而丢弃（产品）”（如2）。
allow; allow for
1. We do not ______ eating in the classroom.
2. It will take you half an hour to get to the station, ______ traffic delays.
3. Passengers ______ one item of hand luggage each.
4. ______ this train being late, we should be back by 10:30.
5. Sometimes a loophole （漏洞） in the law ______ someone to escape being punished.
6. Our new system will ______ more efficient use of resources.
7. Even if they are in prison, they ______ out on Sundays, or holidays such as Christmas, Easter.
Key:
1. allow 2. allowing for
3. are allowed 4. Allowing for
