He spends a lot of time studying.

He reads a lot of books.

He overcame the hardships and achieved success.

He experienced many hardships when he was young.

At that time, I was still a student.

Based on my experience, that method is effective.

I like to experience new cultures.

Lately, the weather has been getting better.

At that time, he was still a student.

He was recalling fondly the summer vacations of his childhood.