快速答案
negar 否认说法的真实性或不给某物；recusar 拒绝所提供或请求的事物。
可靠的方法是先判断这个词在句子里的功能，再翻译。
每个词的作用
negar
to deny or withhold
Use negar for saying that a claim is untrue or not granting something requested.
recusar
to refuse or reject
Use recusar for declining an offer, request, invitation, object, or action.
如何选择
- negar: Choose negar if the sentence points to saying that a claim is untrue or not granting something requested.
- recusar: Choose recusar if the sentence points to declining an offer, request, invitation, object, or action.
例句
O diretor negou a acusação.
The director denied the accusation.
Ela recusou o convite.
She declined the invitation.
常见误区
You nega que something happened, but recusa fazer something. With a request, either may fit from different viewpoints.
放到语境中练习
从你的真实生活中选一个句子，写两遍：一次用 negar，一次用 recusar。如果两个版本都可以，说明意思怎样变化。