Your father has big arms.

That's the tallest tree I've ever seen in my life.

Don't be afraid, it's just a big cat.

It's going to be difficult to transport this large boat from my village to yours.

Ranu was splashing in the river like a big clumsy fish.

five big black cats

Night of Pandora. The forest is full of life. Many creatures and beasts walk, hunt, and fight to survive. Plants glow to give wonderful bioluminescence to the forest. Fan lizards turn, water flows under the blue bioluminescent light. A Na'vi boy walks aimlessly through the forest to feel peace and to see the night's beautiful life. He makes glowing foot tracks on the strong branches of a tall tree. A beautiful skin-blue color fills the sky, the large world stands strong with his siblings and the stars which seem so small. The boy approaches a lake and thinks about the beauty of the world. Eywa smiles upon this one, who is called Zuvo.

Three things about the thanator must always be kept in mind:
• It can move silently through the forest.
• It's big and strong.
• It wants to eat you.

Last night as I was walking through the forest, a frightening demon appeared in front of a big tree.

(Direct address can happen interstitially in a sentence without affecting the sentence or being a part of it in any way. Of course, this would be more common in songs or poetry than in everyday speech.)

The Great Mother was looking after me when the big thanator attacked and I've survived.

The tree on the other side of the stream in front of my house is very tall.

(That places too much emphasis on utral, which is only the standard of comparison and presumably hasn't yet figured into the conversation. In this case na utral would be preferable.)

Your house is large; mine is small.

I saw the biggest thanator in (my) life.
(I saw the biggest thanator I had ever seen)