it's time to have dinner为什么不是having dinner

it's time to have dinner为什么不是having dinner it's time for us （having/to have） dinner It's time for us to have dinner为什么是to have 改为同义句：It's time to have dinner.______ time _____ dinner It's time to have dinner的同义句 It's time to have dinner .的提问 It's time for us____(have)dinner It's time for us ( ) have dinner? is it time to have dinner为什麼要用it time It's half p______six in the evening.It's time to have dinner what tine is it?it's time to have dinner.改为近义句 it's 5:30.it's time () dinner (to/for)