we think it our duty to help others为什么不加IS啊we think it is our duty to help others

问题描述:

we think it our duty to help others为什么不加IS啊
we think it is our duty to help others

不加 IS:
We think it (as) our duty (as) to help others(think 可用consider替换)
加IS:
We think (that) it is our duty to help others.

这句话加不加is 都可以
think sth sth to ...把什么看做什么

we think it (as) our duty to help others~
可能这句话让你这么理解!
但你说的也对
we think (that) it's our duty to help others~