3. borrow , lend和keep的区别
　　borrow"借"，为终止性动词，表示主语"借入"某物，常用短语borrow sth. from sb.
　　lend"借"，为终止性动词，表示主语"借出"某物，常用短语lend sth. to sb.
　　keep "保存，借"，为持续性动词，表示"长时间地借"
　　e.g. I borrowed a book from the school library yesterday.
　　Could you lend your pen to me?
　　How long can we keep the book?
　　4.dress, put on, 和wear的区别
　　dress sb.给某人穿衣服;dress sb.up打扮某人
　　put on 穿上，戴上，表动作;
　　wear 穿着，戴着，表状态;与"be in"同义
　　e.g. The boy dressed himself quickly.
　　The lady dressed herself up and went to the party.
　　Jim put on his coat and went out.
　　Lily is wearing a red skirt today.