However,people's opinions vary on this issue.中people('s) 这个's是所有格?

问题描述:

However,people's opinions vary on this issue.中people('s) 这个's是所有格?
如果改成: people has various opinions on this issue. 用法上和意思上对吗?

第一问,是的.
第二问,若将has改成have,则相同