those可以作为先行词被定语从句限制，其后可用 which / who / that 及零关系代词。没见过 these 后跟定从的情况。
Let us spend a few moments in silence sothat we remember those who died topreserve our freedom. 让我们默哀片刻，以缅怀那些为维护我们的自由而牺牲了的人们。
At the beginning the whole party kept together but by the end of the day those who wereless fit had fallen behind. 起初全体人员都在一起，但到了晚间身体不够强壮的人就落后了。
The topic of cellular physiology is regrettably among those which lie outside the compass of this book. (CGEL) 遗憾的是，细胞生理学这一题目不在本书范围之内。
More modern methods of horticulture havereplaced those that prevailed at the time of the college’s foundation. (CGEL) 更加现代化的园艺方法已经取代了大学刚建立时常用的那些方法。