Le on42 Welcome to the world of English! Teaching Material: Learning English Book 3 Unit6 I Love Learning English . Le on42 Welcome to the world of English! It’s a new le on. Teaching Content: 1.Mastery words and expre io : exciting,nece ary, main/ official language, the United Natio , each other, all over the world, 2.Oral words and expre io : welcome, Mexico, anish, million, , French, still, 3.Useful expre io : English,Chinese,and French are main languages used at the United Natio . What do you mean by…?