All that we can do is wait 英语语法问题

All that we can do is wait 英语语法问题 All that I can do is to wait here 是什么意思? All that I can do is to wait here.为什么用that 英语语法：为什么是All I need to do is wait 英语语法问题.It seems that praise is like sunlight to us,we can't 英语语法问题The world is all that is the case. all we can do to help him is that give him some money There is nothing we can do but wait as calmly as we can 把 “a can we do that Is that why we can all autumn “fall”? all we can do to help him is that give him some money这句话会因为从 All we have to do is to wait怎样分主谓宾吖