When I feel depressed...
Our moods are like a roller coaster going up and down. One moment we feel as if we're on cloud nine, but the next we're totally in the dumps. When we are happy, we tend to share the happiness with people around us. However, when we feel depressed, everyone has his or her own way of dealing with it.
For me , singing at a KTV with friends is the best way to get rid of my depression. By singing out loud, I express my emotions and pretend I am someone else. This has always done he trick for me. Many times, the songs I sang were so sad that I couldn't help but cry. But after I wiped away the tears, I found that my negative feelings were gone as well. There are many ways to keep depression at bay, but the point is to have a way of dealing with it when it sets in.
-roller coaster 雲霄飛車（我很愛，卻現在才學會它的英文）
-as if 就好像
-cloud nine 九霄雲外（的確是外國人硬翻成的英文用法！！）
-totally in the dumps=very very bad mood. (dump 垃圾堆/場，比喻用法)