can和be able to表能力,He can watch TV now. He can watch TV tomorrow.前一句可以用be able to的现在一般时替换,后一句可以用现在将来一般时替换. 这个很好理解. 那么问题来了,must和be sure to表必定的推测时,He mu...
The challenge we face is to find ways to meet the needs of our growing
population while _______(protect) the environment.这里填protecting是省略了主语和be动词吗?但是主语不是the challenge吗?
...oped human being nor a useful citizen of a
democracy. 请问老师as a gift和to your humanity some pieces
of the minds of Sophocles分别作什么成分?and right down the scale and down the ages to Yeats,
Einstein, E. B. White, and Ogden Nash作什么?谢谢老师!
Prince Hamlet used revoltingly grisly images in vicious baiting of his hated uncle when he told him thatin nature's food chain, the worm is king.in是在...方面的意思吗?把.....用在哪方面?
If you spend one hour a day reading 10 pages of a book, you can finish more than 3,600 pages a year, and 110,000 pages in 30 years.请问老师,时间状语 in 30 years 可以去掉 in 吗?