They are helpful还是They are useful?

Question

如题所述

Answer 1

They are helpful.
它们很有用。
重点词汇
helpful给予帮助的，有益的; 愿意帮忙的
They are helpful.前面的问句可以是：
How do you like them?你觉得怎么样？
What do you think of them?你觉得他们怎么样？
由此可见，they are helpful的前面可以是询问相关人、事物作用.
希望对你有帮助