1)To say that two things are similar, we use the same :
as.than. then. like. 2)We use 'elder' as a comparative form of the adjective 'old' :to talk about friends. to talk about people in a family. to talk about all people. to talk about children. 3)We use as + adjective + as to show that :two people or things are not equal. two people or things are equal. two people or things are not similar. two people or things are different.