be prepared to do与prepare to do的区别

《朗文高级英语词典》prepare 词条：

1. [intransitive and transitive] to make plans or arrangements for something that will happen in the future [= get ready]

prepare for

The 45 year-old explorer has been preparing for his latest expedition to the Arctic.

 prepare to do something

Her parents were busy preparing to go on holiday.

The prosecution wanted more time to prepare their case.

2. prepared  [adjective]

be prepared to do something

to be willing to do something, especially something difficult or something that you do not usually do:

You have to be prepared to take risks in this kind of work.

How much is she prepared to pay?

从词典的解释和例句可以看出：be prepared to do sth. “乐于做某事”(prepared 是形容词)；prepare to do sth. “准备做某事”。

此外，用we would 比we will 语气婉转，例如：

We would be delighted to accept your invitation.  我们很高兴接受您的邀请。

We would be very grateful if you could give us some advice.  如果你能给我们提些建议，那我们会非常感激的。