参与了这个课程后，我的汉语进步了。

Cānyùle zhège kèchéng hòu, wǒ de Hànyǔ jìnbù le.

After taking this course, my Chinese improved.

很开心能够参与这次的活动。

Hěn kāixīn nénggòu cānyù zhè cì de huódòng.

I’m really happy to be able to take part in this event.

我很乐意参与这个项目。

Wǒ hěn lèyì cānyù zhège xiàngmù.

I am happy to participate in this project.