表达自己的兴趣爱好时，可以使用以下几种英语句型：

1. 直接表达：

   

   • I enjoy + 动词-ing + … 例如：I enjoy reading books in my free time.
   • I like + 动词-ing + … 例如：I like playing the guitar as a hobby.
   • I love + 动词-ing + … 例如：I love hiking in the mountains.

2. 使用"be interested in"表达兴趣：

   • I am interested in + 名词/动名词 + … 例如：I am interested in photography and painting.
   • I am fascinated by + 名词/动名词 + … 例如：I am fascinated by ancient history.

3. 使用"be passionate about"表达强烈的兴趣：

   • I am passionate about + 名词/动名词 + … 例如：I am passionate about cooking and trying new recipes.

4. 使用"have a passion for"表达爱好：

   • I have a passion for + 名词/动名词 + … 例如：I have a passion for traveling and exploring new cultures.

5. 使用"spend time doing"表达活动：

   • I spend a lot of time + 动词-ing + … 例如：I spend a lot of time gardening on weekends.

通过这些句型，你可以灵活地用英语表达自己的兴趣爱好。