Когда используется does а когда do?

ben is very beautiful student.he get only good marks,but he very lazy.on a day he have four or five lessons.at school he have many friends.his dear lessons is math,art and english.

а если не надо с i can-то можешь написать ещо вот так

my grandpa has a very big farmhouse.

in londan is biulding a largest bridge.

in my garden grow many beautiful flowers.

my horse's name is snow-white.