You should say:

　　What it was

　　Where it happened

　　Why it was important

　　How people felt about it

　　1-4月雅思口语话题范文：庆祝活动(an important event that you celebrated)

　　Well, the important event that i want to talk about today is my mother’s birthday. Last month was my mother’s birthday. In the past the whole family usually went to the restaurant and the cinema to celebrate. However, this year, I decided to do something special since i have been away from home for a long time. So, I planned to prepare a surprise birthday dinner for my mother.

　　Honestly speaking,preparing the meal alone is a kind of difficult task. Firstly, I downloaded the recipes of my mother’s favorite dishes from the Internet. Secondly, I needed to learn about how to cook those dishes from my father. Thirdly, I needed to guarantee that my mother would not know about this surprise in advance. Luckily, everything went well on my mother’s birthday, and mu mother was moved to tears when she saw the meal I cooked for her.

　　Basically speaking, my mother’s birthday is an important event in my family since it is a good chance for my family o get together. I think my parents, especially my mother are extremely surprised and moved to this celebration since it is the first time for me to cook for my family.

　　Moreover, i think this meal symbolizes my love to my mother. When I was young, my mother got up very early to prepare the breakfast for me and sent me to school everyday. Nowadays, i have already grown up and it is the time for me to take care of her.