two
hundred表精确数字，200
e
g
:there
are
two
hundred
students
in
fx/
two
hundred
of后是加范围之类，
比如这群学生中的200个
two
hundred
of
the
students
hundreds
of
表示约数，数以百计的
e
g：hundreds
of
students
took
part
in
the
exam
考试加油
来举两个例句相信你就能明白
1、Two hundred books were sold yesterday.昨天有200本书被售出
2、Two hundred of the books were sold yesterday.昨天在所有的书里有200本被售出
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