It is time to have lunch 为什么be后面不跟动名词而更动词不定式

it is time to have it is time to have lesson是什么意思 it is time to have breakfast 同义句it is ()() what time is it?lt is time to havewhat time is it?lt is time to have dinner改为近义句 it is time to have dinner＝?it is time to have dinner=it is time for dinner=?还等于什么?it is time _____ _______dinner. It is time to have supper.意思相近的句子It is time （）（） time to is lunch it have 连词成句 have it dinner to time is 连词成句 time.to it have is supper.连词成句 Is it time ( )supper?A.to have B.having It is time to have dinner的同义句 回答is it time for them to have english classes? It is time to have classes变成同意句 It is time to have lunch改为过去式 It is time to have class.变为同义句 it is time to It is time to it is 12 o,clock,it is time to have lunch 中have怎么变