它是非常有用的用英语怎么写

It's very useful

是非───Right and wrong;常有───Often

He doesn't know the difference between right and wrong.───他是非不分.

Children must be taught the difference between right and wrong.───必须教儿童分清是非。

We should never mix up right and wrong on the principle.───我们在原则问题上不应当是非不清.

Children do not know by instinct the difference between right and wrong.───儿童并非生来就会分辨是非。

The man couldn't discern between right and wrong.───那人是非分辨不清.

Johnson didn't seem to be able to tell the difference between right and wrong.───约翰逊似乎不能分辨是非曲直.

We must draw a clear distinction between right and wrong.───我们必须明确区分是与非.

We should distinguish between right and wrong.───我们应辨别是非.

Do children know the difference between right and wrong?

He can discern between right and wrong.

He doesn't know the difference between right and wrong.

Is there always an absolute distinction between right and wrong?

We batted a cardinal question of right and wrong.