occasion定语从句用where还是when

occasion定语从句可以用where，也可以用when。当occasion表示“时刻，时候；在定语从句里面作时间状语的时候，关系副词选择when。当occasion表示“特殊（或重大）场合”，在定语从句里面作时间状语的时候，关系副词选择where。

当occasion在定语从句里面作时间状语的时候，关系副词选择when。

例句：

Wedding is an occasion when bride is the most beautiful.

婚礼是新娘打扮得最漂亮的时候。

Describe an occasion when someone visited your home.

描述一个某人访问你家的情景。

In China, we should consider the specific situation and occasion when we present gifts.

在中国，赠送礼物应考虑具体情况和场合。

当occasion在定语从句里面作时间状语的时候，关系副词选择where。

例句：

Tell me of an occasion where you had to demonstrate Internet business leadership.

请给出一个你必须展示你的领导能力的例子。

I had an occasion where I was performing, the event included a dinner and dancing .

我有一个重要场合需要出席，期间将举行晚宴、跳舞。

Please describe an occasion where somebody gave you positive suggestions.

请描述一个别人给你积极建议的情景。