be impressed with/by的区别：意思不同及语态不同，be impressed with留下深刻印象；be impressed by被……所感动，是指前者被后者感动，或者留下深刻印象，可以说是被动形式的。
be impressed with/by的意思
be impressed with与be impressed on两个都有“留下印象；使……明白重要性”的意思。
不过，可以从两个句子中了解：
1,The girl impressed her friend with her sense of humor.从这个句子中可以看到，with后面接的是smoothing。
2,He impressed the importance of their work on them.从这个句子看到，on后面接的是somebody。另外，be impressed with有欣赏，受感动的意思。
be impressed with/by的例句
be impressed by：
1、The women began to suss that there was no reason why they should be impressed by him.
这些女人开始意识到她们没有理由被他打动。
2、I think people would be impressed by your language abilities.
我想人们会对你的语言能力留下深刻的印象。
3、You will be impressed by the easiness and simplicity of user's interface.
你会对该软件舒适且简单的'用户界面留下深刻的印象。
be impressed with：
1、Visitors will be impressed with the enormous range of collectable objets d'art on offer.
特价出售、值得收藏的精美艺术品种类繁多，将会让参观者大开眼界。
2、I am sure he will be impressed with our20th century way of life.
我肯定他会对我们20世纪的生活方式印象深刻。
3、I think you'll be impressed with the talent you see.
我想，你一定会被他们的天资所震撼到。