It's time to + 动词原形....
It's time to go to school. 该上学了。
It's time to go to bed. 该睡觉了。
It's time to get up. 该起床了。
It's time to have breakfast. 该吃早饭了。
It's time to have lunch. 该吃午饭了。
It's time to have dinner/supper. 该吃晚饭了。
It's time for + 名词。
It's time for dinner. 该吃晚饭了。
It's time for class. 该上课了。
It's time for breakfast. 该吃早饭了。
It's time for lunch. 该吃午饭了。
——《大嘴英语学堂》·深圳