Q1 it's time for supper等于it's time to have supper吗? Q2Q1 it's time for supper等于it's time to have supper吗? Q2 it's time to do sth 和it's time for sth有什么区别

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Q1 it's time for supper等于it's time to have supper吗? Q2
Q1 it's time for supper等于it's time to have supper吗? Q2 it's time to do sth 和it's time for sth有什么区别