I would have gone to my cousin's birthday party last night, but I was not available.

昨天晚上我本想去参加我表哥的生日聚会，但我没空。

youdao

I'm going to my cousin's birthday party.

今晚我要去参加我堂兄的生日聚会。

youdao

In this evening, I had to go to my cousin's birthday party and come to movies with my friends.

在今天晚上，我不得不去我表哥的生日聚会，和我的朋友去看电影。

youdao