Should we have invited her for lunch这句为什么用的是现在完成时

Should we have invited her for lunch这句为什么用的是现在完成时 We should have English food for lunch .(改为否定句 We have hamburgers and chips for lunch.改为现在完成时 what will we have for lunch的同义句 We’ll have time to stop for lunch,won’t we?和We should have e have for lunch 为什么用 for I well take it的同义句.We have no vegetables for lunch.We need t mrs.black invited some of her friend to have lunch一句有错吗?在哪?怎 We have some rice for lunch.改为否定句 We have pork and soup for lunch.(改否定句) we lunch have for salad 连词成句 I would invited her to have dinner at my house 为什么要用invited呢