1. allow 常指聽任或默許某人去做,含有消極地不加反對或阻止的意思,也有表示客氣的請求
She won't allow the children in(to the house) until they've wiped their shoes.
孩子們不把鞋擦乾凈, 她就不讓他們進(屋).
2. permit 常指法令的允許或不允許,也能表示含有積極地同意某人去做;表示允許時,能和allow可以互換
I'll come after the meeting if time permits.
如果時間許可的話,我開完會就來。
3. let 指積極允許,不加反對或阻止,但不能用于被動結構
I don't agree with all you say, but I'll let it go at that.
我并不完全同意你說的話,但我不再多說了。
4. admit 指允許某人進入某場所、單位或加入某單位、組織
This sentence admits of several interpretations.
這個句子可以有多種解釋。
5. anything but 根本不,除……以外決不
Climbing Mt. Everest is anything but a pleasure trip.
登圣母峰絕不是一次輕松的旅途。
Is he anything of a sportsman?
他有點運動員的風度嗎?