There are at least three thousands students in our shool.(找错）
问题描述：
There are at least three thousands students in our shool.(找错）
答
thousand不用加s
前面有数词时不用加s，后面也不用加of，前面没有数词则用thousands of
答
thousand不用加s,因为thousand、hundred前有具体数字时，不带s，没有具体数字，“数以百计”、“数以千计”，带s，而且后面要加of.
答
thousand 不要s
答
thousands 去掉s
答
thousands-thousand