当然可以，以下是用“when I was”造的几个句子：
- When I was a child, I loved to play hide and seek with my friends.
- When I was in college, I majored in computer science.
- When I was younger, I was afraid of the dark.
- When I was living in Japan, I learned how to cook sushi.
- When I was sick last week, I stayed home from work and rested.
- When I was little, my grandmother always told me bedtime stories.
- When I was on vacation in Paris, I visited the Eiffel Tower.
- When I was studying for my exams, I found it helpful to make flashcards.
- When I was a teenager, I used to play basketball every afternoon.
- When I was growing up, my family often went camping during the summer.
