大学英语：Hear sb. do sth. 感官动词后面使用了动词原形

　　2. Unless(除非) you want to end a relationship， you don't tell another person what you think of her or him like this.

　　3. Educated people 有教养的人

　　4. Try to do 的否定是try not to do

　　5. That is what manners are about： acting in a civilized way to avoid misunderstanding， friction， and conflict.

　　6. There are no laws enforcing respect.

　　7. Acceptable 可接受的;unacceptable 不可接受的

　　8. Remain为半系动词，后面可接形容词

　　9. They swear no matter who is around them， they listen to their Walkmans while the teacher is talking to them.

　　10. Different 不同的;indifferent 默然的

　　11. Because 为连词，后面要连接一个句子;because of 后接名词或代词

　　12. Look 和sound 为半系动词，后接形容词

　　13. Being polite and showing respect can give us an edge. (动名词作主语)

　　14. Getting a job is usually based on making the right impression.(动名词作主语)