Chinese phrase
我〜有课，没法参加 wǒ 〜 yǒu kè méi fǎ cān jiā
Meaning
I have a class ___ and can't take part
When to use it
It says a class prevents participation at a set time. It gives a clear reason for declining an activity or plan.
Example dialogue
周六的社区活动改到周日下午，可以吗？ zhōu liù de shè qū huó dòng gǎi dào zhōu rì xià wǔ ké yǐ ma
Can we move the Saturday community activity to Sunday afternoon?
我周日下午有课，没法参加。 wǒ zhōu rì xià wǔ yǒu kè méi fǎ cān jiā
I have a class on Sunday afternoon, so I can't take part.