"I will feel very happy" 这句话用英语表达就是 "I will be very happy."
这句话的来源是英语中最常用的表达方式之一。
例句：
"I will be very happy when I see you again." (当我再见到你时, 我会很高兴)
"I will be very happy to hear that you passed the exam." (听到你考试及格的消息, 我会非常高兴)
"I will be very happy if I get the job." (如果我得到这份工作, 我会很开心)