blame的动词用法和名词用法是高考英语的主要考察点，be to blame是考察频度最高的blame用法。blame的用法主要考察三点：

blame的动词用法

blame作动词时主要的意思是“责备，责怪”

例句：Don't blame the failure on me. When you take the chance, you take the risk.

不要把失败归罪于我。你愿赌，就要服输。

I do not blame them for trying to make some money...

我认为他们想赚一些钱也是情有可原的。

I do not blame them for trying to make some money

我认为他们想赚一些钱也是情有可原的。

Ms Carey appeared to blame her breakdown on EMI's punishing work schedule

凯丽女士似乎将她的精神崩溃归咎于百代唱片公司高度紧张的工作日程安排。

If it wasn't Sam's fault, why was I blaming him?

如果这不是萨姆的过错，为什么我要责怪他？

I did not blame him for feeling put out

我没有因为心烦而责备他。

Don't blame him. After all, he's only a child.

别责怪他，他总还是个孩子。

If it all goes awry, don't blame me.

如果失败了，别怪我。

Organizers blame the weather for the low turnout.

组织者把到场人数少归咎于天气。

blame的名词用法

blame作名词时主要的意思是“责任，责怪”

例句：The government will have to take the blame for the riots.

政府将不得不对骚乱承担责任。

Why do I always get the blame for everything that goes wrong?

为什么出了事总是让我背黑锅？

The president put the blame squarely on his opponent.

总统把责任完全推给了他的对手。

Don't lay/put the blame on yourself, and I will take it (the blame).

不要把过失责任往自己身上揽，我会对此负责。

Be to blame (for sth)的用法

be to blame是考察频度最高的用法，是习语，意思是“应受责备，应该责怪某人”

例句：She is partly to blame.

她也要负一部分责任。

I know nobody else is to blame for my bad academic performance.

我知道我学习表现不佳不应该责怪任何其他人。

If anyone's to blame, it's me.

如果有人该承担责任，那就是我。

Which driver was to blame for the accident?

哪位司机是此次事故的肇事者？

If their forces were not involved, then who is to blame?...

如果他们的部队没有介入，那么谁应该承担责任？

The policy is partly to blame for causing the worst unemployment in Europe.

欧洲出现了最严重的失业情况，这应当部分归咎于这项政策。

You are not to blame; it is his fault.

这是他的错，不怨你。

It's your fault.; You're to blame.

这就是你的不是了。

She retorted upon me, saying I was to blame.

她反驳我，说我才应该受责备。

tend to blame

倾向于责怪

lay blame

归咎（于）

share the blame

共担罪责