liter/litter/gallon/literature/literary/literate/illiterate
记忆：
1. liter [ 5li:tE ] n. 公升 The bottle holds a liter of beer. 瓶子装着一公升啤酒。
2. litter [ 5litE ] n. 垃圾 vt. 乱丢 No littering in public places. 公共场所不要乱丢东西。
3. gallon [ 5^AlEn ] n. 加仑(英加仑=4. 546升，美加仑=3. 785升） We need four gallons of oil. 我们需要四加仑的油。
4. literature [ 5litEritFE ] n. 文学(作品) Now only a few young people take interest in literature. 现在只有部分年青人对文学感兴趣。
5. literary [ 5litErEri] adj. 文学(上)的, 从事写作的, 文艺的 Pour literary works can hardly find their places in today’s market, which is a sad thing for the society. 纯文学作品很难在今天的市场上有地位，这人社会的一种悲哀。
6. literate [ 5litErit] n. 学者 adj. 有文化的，有阅读和写作能力的 Literate people earn more than illiterate ones in our city. 在我市有文化的人挣钱比文盲多。
7. illiterate [ i5litErit ] n.文盲 adj.不识字的, 没受教育的 About half the population in the country is still illiterate.这个国家有一半人口仍是文盲。
另类阅读：
Do you think a man who has no interest in literature and likes drinking two liters of beer may be called literate? He may not litter and can fill cars with gallons of oil, but he may not understand any poem.