Today is my birthday,my mom bought a big cake for me ,and I had a great time all day .I am so happy!
Today is my birthday. My mum buys me a big cake. I have a good time for a whole day.
Today I am very happy.
Today is my birthday.My mother bought me a big cake, I played for a day, I was very happy today.
后面三句话最好用过去式。
Today is my birthday . Mother bought me a big cake . I played all the day and I enjoyed myself/ I had a good time .
Today is my birthday. My mum bought a big cake for me. I played for a day and enjoyed myself.