有读者问： 有这样一个句子：
(1)Don't trust those who leave their friends the moment they get into difficulty!
those是否即those men?those换成these行吗？
those在此相当于those people,但一般不在those who之间加上people。those who等于people who，已经固定，故不可将those代之以these。再如：
(2)Those who would like to go on the trip should put their names on the list.
(3)Those who expect the worst are less likely to be disappointed.
(4)There are those who say she should never have been appointed.
