frightened和frightening的区别：含义不同、用法不同。frightened可作动词和形容词，含义为“害怕的”、“使惊恐”，是用来形容人的；frightening也可作动词和形容词，含义为“可怕的”、“使惊吓”，是用来形容东西的。

frightened是frighten的过去分词和过去式形式，可作动词和形容词，意为害怕的;受惊的;惊吓的；使惊吓;使惊恐。

例句：I'm frightened of walking home alone in the dark.

我害怕在黑夜单独走路回家。

She was frightened of flying...

她害怕坐飞机。

Everyone was frightened by the strange sequence of events.

人人都因接二连三发生的怪事感到惊恐。

He's not frightened of getting his hands dirty.

他不怕体力劳动。

I agreed, but only because I was frightened.

我同意了，但只是因为我受到了恐吓。

She crouched in the dark, too frightened to reveal herself.

她蜷缩在黑暗中，吓得不敢露面。

Most children are frightened by the sight of blood.

大多数孩子见到血就害怕。

It doesn't frighten them. They're used to it.

这可吓不倒他们。他们已经习惯了。

frightening是frighten的现在分词形式，可作动词和形容词，意为可怕的;骇人的;引起恐惧的;使惊恐的；使惊吓;使惊恐。

例句：It's frightening to think it could happen again.

想到此事可能再次发生就使人不寒而栗。

He would never frighten anyone or cause them any harm.

他永远不会吓唬或伤害任何人。

Sorry, I didn't mean to frighten you.

对不起，我没有吓唬你的意思。

All this was just designed to frighten me and keep me in line.

所有这一切不过是设计好了来恐吓我、让我乖乖听话的。

He fired into the air, hoping that the noise would frighten them off.

他向空中开枪，希望枪声能把它们吓走。

Fairground rides are intended to frighten the life out of you.

露天游乐场的飞车就是想把人吓丢了魂儿。

Don't put your prices too high or you'll frighten the customers off.

要价别太高，否则会把顾客吓跑的。