17） to be treated as a guest
（考点：不定式的被动形式）
18） go to the campus bookstore to buy used books
（考点：不带to的不定式）
19） but play bridge the whole day
（考点：同上）
20） to wipe our feet on the mat before going into the room
（考点：当动词see, make, hear等用于被动语态时，不定式要保留to）
七、分词
1） "Happy birthday to you" sung in Italian
（考点：分词作宾语补语）
（catch, discover, feel, find, get, have, hear, keep, leave, make, notice, see, watch等动词常用分词形式作宾语补语）
2） parked in the fire lane
（考点：分词作定语）
3） killing thousands upon thousands of people
（考点：分词作结果状语）
4） raising the average yield by 15 percent
（考点：同上）
5） trying to deduce its operating principle
（考点：分词作伴随状语）
6） Seeing that everyone was bending over his/her book
（考点：分词作原因状语）
7） Deeply moved by the boy's deeds
（考点：同上）
8） Seen from the eyes of a young friend
（考点：分词作方式状语）
9） Not having heard from his parents for a long time
（考点：1. 分词作原因状语；2.分词的否定形式；3.现在分词的完成式）
八、动名词
1） Taking a cold bath every day
（考点：动名词作主语）
2） making their daughter do what she didn't like to do
（考点：动名词作动词的宾语）
（下列动词后的宾语只能是动名词而不能是不定式：admit, advise, allow, anticipate, appreciate, avoid, delay, deny, dislike, dread, encourage, enjoy, escape, excuse, fancy, finish, can't help, imagine, keep, mind, miss, permit, postpone, practice, prevent, propose, recall, recollect, resent, resist, risk, can't stand, stop, suggest）
3） getting our goods into the international market
（考点：动名词作介词的宾语）
4） crying over spilled milk
（考点：动名词用于固定结构。动名词经常与以下词组连用：be worth, have difficulty （in）， it be no good/use/worthwhile, there be no need/no point in, how/what about, what's the point of, what's the use of）
5） having peeked at his neighbor's test paper
（考点：动名词的完成式）
6） being promoted to manager
（考点：动名词的被动式）
九、非谓语动词用法区别
1） working very hard.
（考点：mean表示"意味着"）
2） to drive there, but his car broke down
（考点：mean表示"打算"）
（类似需要区别的动词还有forget, remember, regret, go on, stop等）
3） talking to his mother
（考点：强调正在进行）
4） talk to his mother for an hour
（考点：强调整个过程）
5） only to break his own leg
（考点：意料之外的结果）
