麻烦曹老师,首先:He will put off the picnic until May 1st, when he will be free. He will put off the picnic until May 1st, on which he will be free.He will put off the picnic until May 1st,and on it he will be free.
Many of the world's great cities are located on rivers, and almost every country has at least one river flowing through it ________ plays an important part in the&nbs...
... each year than do eBay and Amazon
combined. 这句话想请问:①比较状语从句 than do/be +主语,属于全部倒装还是部分倒装?比较状语从句的倒装完全倒装和部分倒装都可以吗?②combined在这里是什么用法,combined可以是形容词,但是字典上...