2、过去分词（ed）：被动、已完成
Art conservators(管理员) dream of finding (21)_______(hide) secrets in the masterpieces they look after.
Hide是用做secrets的定语，它们之间是“受”的关系——hide“把（某人/物）藏起”。故用过去分词hidden。
(31) _________ (shock), I took it from her automatically. She smiled and walked away.
主语I和shock是“受” 的关系，即被动——shock“令（某人）震惊”，故shocked。本身已转化为形容词。
3、不定式和动名词：固定搭配
If the total stress in your life is over 150, you are twice as likely (40)_______ (get )ill.
Be likely to do：可能会……。故to get。
When I ask him to put down the phone and stop (37) _____ (ignore) me, he say, "In a minute."
Stop doing：终止、停止做某事。故ignoring。
（二）应用：非谓语动词功能
1、定语：关联名词——即分词所修饰的那个名词
A 前置定语
Over time, the high cost of living became a little burden on my already (28) ______ (exhaust) shoulder.
前置定语，两种动词：
一个是描述情感色彩的——ing类都可理解为“令人……的”；ed类都可理解为“感到……的”。此处为exhausted（感到精疲力尽的肩膀）。
另一个是描述行为的动词——ing表示“正在……的”；ed类表示“已经（被）……的”。
B 后置定语
** The machine (34)______ (equip) with securing cameras and alarms looks like a mini shop with a brick front, a grey roof and a display window.
分词定语，可转化成定语从句来检验。Equipped=which is equipped。
2、状语：关联动词——即与之相关的另一个动词（一般是谓语动词）
(26) ______ (earn) some money to pay the daily expenses, I started work in a local café as a waiter.
I started work的目的是earn some money。故为目的，to earn。
（23）_______(look) at the painting with the microscope，I came across the tiny body of a grasshopper covered in the paint...
分词相当于时间状语从句，I came across和look是同时发生，故looking。
