There is a big tree in the park.

His acting is just like wood.

There are many big trees in the park.

This restaurant offers an all-you-can-eat service on weekends.

Throwing away food scraps is a waste of food.

It's better for him not to know the truth. After all, ignorance is bliss.

He is feigning ignorance about that problem.

He knows that pain through his own experience.

I have no way of knowing what he is thinking.

He is working hard to make his abilities known to the world.