It is my dream to do sth的过去式怎么说?要把is变成was吗?
It is my dream to do sth的过去式怎么说?要把is变成was吗?
it is time to do sth过去式
类似my job/ambition/dream is to do sth 或doing sth 或to doing st
it is my frist time to do sth / or doing sth/or do sth?
it is possible to do sth和it possible to do sth谁是正确的
it difficult to do sth 和it is difficult to do sth 的区别
it is no use doing sth.与it is no use to do sth.的区别
It is no use doing sth与It is no use to do sth的区别.
it is/was adj.for sb to do sth.真正的主语是to do sth,sb是此句的宾语,又是to
It is time to do sth和It is time for sth有区别吗?
it is n.to do sth.
It is the first ...to do sth.