1.I will go to university when I am 18.
I will enter university when I am 18.
2.I started school at the age of seven.
I started school when I was seven years old.
3.If I have money,I will buy a big house for my mother.
4.I will become fat if I eat too much.
If I eat to much,I will become fat.
5.I watch TV after reading English
After I finish reading English,I watch TV.