课程内容

《Life in the future （Part 4）》
1.过去分词作定语
 a.单个过去分词作定语，通常前置a及物动词的过去分词，具有被动和完成的意义。
a   broken cup
a   wounded soldier
an   unexpected guest
the excited crowd
b.不及物动词的过去分词，具有主支力完成意义。
 a grown woman
 A woman who has grown
a  retired officer
c.有时通过一个名词或数词加另一个名词的过去分词可以构成形象的复合形容词。
a three-legged table.
a one-eved general
an honest-faced man
2.过去分词短语作定语：通常后置，其作用相当于宾语从句。
a letter written in pencil
a letter which was written in pencil
the book borrowed by jack
the machines produced last year
过去分词作状语时，为了更好地表达意义，有些连词可以与过去分词一起连用：
I went on talking,though continually interrupted by George.
我继续讲我的，心管一直被乔治打断。
They would never do this unless compelled.
除非受到强迫，否则他们决不会做种事。
过去分词还可引导一个状语从句：
Provided(that)there is no opposition,we shall hold the meeting there.
如果没有人反对，我们将在那里开会。