如果您想要呕吐，可以使用英语表达 "I feel pke vomiting" 或者 "I want to vomit"。

这个说法来源于英语中的动词 "vomit"，意思是呕吐。它的过去式是 "vomited"，过去分词是 "vomited"，现在分词是 "vomiting"。

下面是一些例句：

"I feel nauseous and I think I'm going to vomit." (我感觉恶心，我想我要呕吐了。)
"I drank too much alcohol and now I want to vomit." (我喝了太多酒，现在我想呕吐。)
"I think I ate something bad and now I'm vomiting." (我想我吃了些坏东西，现在我在呕吐。)