Although I broke test tubes and played about with chemicals for fun, I did occasionally manage to obey the teacher's instructions as well; repeating experiments that others had long ago undertaken.
The sun is currently in a period of low activity but even so large sunspots occasionally appear.
There is a severe shortage of water in this city, so we must give up having a bath occasionally.
We are expecting an occasional rainfall.
Occasional showers are possible tomorrow.
It was cloudy, with occasional rain.
He occasionally visited me.
He doesn't travel much apart from occasional business trips.
Let's occasionally change where we go to eat out.
Tomorrow's weather should be sunny with occasional rain.
Yuriko thoroughly enjoyed her occasional secret meetings with her lover.
They visited me occasionally.
Teachers should occasionally let their students blow off some steam.