1. You look well today.

2. I am looking for my lost book.

3. What are you looking at？

4. He is looking after his sick mother at home.

5. He looks at the picture.

6. Look straight ahead and you'll see the post office.

7. Conditions look toward peace.

8. These flowers are good to look at.

9. Look carefully!

10. He looked about （himself）.

希望这些例句能帮助你理解look作为不及物动词的用法。